Explanation:
Genes are contained in chromosomes, which are in the cell nucleus
Answer:
in the dna? im not sure
Explanation:
Human Population Growth and Overpopulation
Can someone please help me I don't understand what I have to do.
Answer:
all you're trying to do is create a histogram of what has happened in the past and what could happen in the future.
Explanation:
for example and AD you feel the first little bar because it's not more than a billion and its last therefore it would be the zero billion
and then for 1850 you feel to bars because they had 1 billion people so therefore you feel the 0 billion and the 1 billion part
When does puberty occur? What causes the changes that occur during puberty?
Answer:
When does puberty start? Puberty starts when changes in your child's brain cause sex hormones to start being released from the gonads, which are the ovaries and testes. This typically happens around 10-11 years for girls and around 11-12 years for boys.Skip
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What is puberty?
Puberty is the time when your child moves through a series of significant, natural and healthy changes. These physical, psychological and emotional changes are a sign that your child is moving from childhood towards adulthood.
Changes in puberty include:
physical growth and development inside and outside children’s bodies
changes to children’s sexual organs
brain changes
social and emotional changes.
When does puberty start?
Puberty starts when changes in your child’s brain cause sex hormones to start being released from the gonads, which are the ovaries and testes.
This typically happens around 10-11 years for girls and around 11-12 years for boys.
But it’s normal for the start of puberty to range from 8-13 years in girls and 9-14 years in boys.
There’s no way of knowing exactly when your child will start puberty. Early changes in your child’s brain and hormone levels can’t be seen from the outside, so it’s easy to think that puberty hasn’t started.
Puberty can be completed in about 18 months, or it can take up to 5 years. This range is also completely normal.
Girls: key physical changes in puberty
In girls, these are the main external physical changes in puberty that you can expect.
Around 10-11 years
Breasts will start developing. This is the first visible sign that puberty is starting. It’s normal for the left and right breasts to grow at different speeds. It’s also common for the breasts to be a bit tender as they develop. If your child wants a bra, a soft crop top or sports bra can be a good first choice.
A growth spurt occurs. Some parts of the body – like the head, face and hands – might grow faster than limbs and torso. This might result in your child looking out of proportion for a while. On average, girls grow 5-20 cm. They usually stop growing at around 16-17 years.
The body shape will change. For example, a girl’s hips will widen.
The external genitals (vulva) and pubic hair will start to grow. Pubic hair will get darker and thicker over time.
Around 12-14 years (about two years after breast development starts)
Hair will start growing under the arms.
A clear or white discharge from the vagina starts several months before periods start. If the discharge bothers your child, you could suggest your child uses a panty liner. If your child says it’s itchy, painful or smelly, consult your GP.
Periods will usually start within 2 years of breast growth starting, but can take up to 4 years.
Boys: key physical changes in puberty
In boys, these are the main external physical changes in puberty that you can expect.
Around 11-12 years
The external genitals (penis, testes and scrotum) will start to grow. It’s normal for one testis to grow faster than the other. You can reassure your child that men’s testes usually aren’t the same size.
Pubic hair will start to grow. It will get darker and thicker over time.
Around 12-14 years
Your child will have a growth spurt. Your child will get taller and their chest and shoulders will get broader. Some parts of your child’s body – like their head, face and hands – might grow faster than their limbs and torso. This might result in your child looking out of proportion for a while. On average, boys grow 10-30 cm. They usually stop growing at around 18-20 years.
It’s common for boys to have minor breast development. If your child is worried by this, it might help your child to know it’s normal and usually goes away by itself. If it doesn’t go away or if the breasts seem to be growing a lot, consult your GP.
Around 13-15 years
Hair will start growing on other parts of your child’s body – under the arms, on the face and on the rest of the body. Leg and arm hair will thicken. Some young men will grow more body hair into their early 20s.
The hormone testosterone is produced, which stimulates the testes to produce sperm.
Your child might start having erections and ejaculating (releasing sperm). During this period, erections often happen for no reason at all. Just let your child know that this is normal and that people don’t usually notice. Ejaculation during sleep is often called a ‘wet dream’.
Around 14-15 years
The larynx (‘Adam’s apple’ or voice box) will become more obvious. Your child’s larynx will get larger and their voice will ‘break’, eventually becoming deeper. Some boys’ voices move from high to low and back again, even in one sentence.
Answer:
For girls, puberty typically occurs between the ages of nine and thirteen
For boys, puberty typically occurs between the ages of ten and fifteen.
An increase in hormones – estrogen and progesterone in girls and testosterone in boys – causes the changes that happen during puberty.
Explanation:
A student places a healthy potted plant and a plastic straw in a closet for two weeks. After two weeks, the student observes that the plant is wilted and brown, while the plastic straw remains the same. The student classifies the plant as living and the plastic straw as nonliving.
What criteria does the student use to classify the plant as living rather than nonliving?
Answer:
Plants need water and sun to create their food source, glucose. When the plant was left in the closet it didn't have access to the sun. One of the requirements of life is that all living things need energy/have a metabolism. Without food the plant eventually died.
how do you think earths large temperature gradient affects the speed of its convection currents how would this speed change if earths core was cooler
What is the best way to test a hypothesis?
Group of answer choices
design and perform an experiment
create a large spreadsheet with all your data on it
do lots of research
ask scientists, then make an educated guess
Designing and performing an experiment is the best way to test a hypothesis.
What is a Hypothesis?This is defined as a proposed explanation about a particular phenomenon or occurrence.
Performing experiments helps to test if the hypothesis if it is valid or not which is why option A was chosen.
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Which statement describes the genes within DNA?
which could describe the chemical reaction that is shown
Answer: dehydration of proteins.
Explanation:
Which of the following is true of living things that have prokaryotic cells when compared to living things that have eukaryotic cells?
They have many types of organelles.
They are types of plants.
O They are always larger than eukaryotic organisms.
They are always unicellular.
Answer:
the answer is the last one, they are always unicellular
Explanation:
Difference between Birds and Bats.
Explanation:
Bat and birds fall into two very distinct Categories: bats are classified as mammals and birds are ave. Bats give birth to live young and produce milk to feed their babies. Birds lay eggs and forage to feed their young.
What types of organisms are
capable of evolving?
A. higher-level organisms
B. all organisms
C. ancient creatures only
Biological method involves all the following except
(a) data collection (b) observation (c) proportion (d) experiment
How does the amount of food in a meal effect the time it takes to digest it?
A light meal can be digested in one to two hours, but heavy meals can take up to six.
A light meal can be digested in three to four hours, but heavy meals can take up to eight.
The body digests food at the same rate no matter the quantity.
A medium meal can be digested in one to two hours, but heavy meals can take up to six.
Answer:
The correct answer is:
Explanation:
Option A is the correct answer
Hope this helps.....
Have a nice day!!!!
Which of the following correctly describes the formula for speed?
Answer:
im sorry there are no options to the question
Answer:
Speed = Distance/ Time taken
When the Earth's rotation naturally brings water away from the
equator and moves cold water close to the surface Westerly
winds begin to strengthen again. What does this signal?
O A. The midpoint of the Coriolis Cycle
O
B. The beginning of El Nino
O c. The end of El Nino
OD. The beginning of an Ice Age
Which is defined as a cell structure made of DNA that gives all of the master instructions for the cell?
a. centromere
b. chromosome
c. allele
d. gene
Answer:
a chromosome is a cell structure made of DNA,which is found in the nucleus of a cell.
I hope this helps
if the alle B represents black fur and
alle b represents white fur what would be the genotype of animal with white fur
Answer:
The genotypes would have to be "bb".
Explanation:
If the dominant allele B is present in a genotype (a genotype is the two letters to represent the trait) then the organism will always be black.
BB= black
Bb= black
bb= white. This is because there is no "B" to dominate the genotype.
Please give me brainiest I am trying to get one !!!!
Mention the types of bees
Answer:
ok thus very good percent few Mohammad khan
Soil moisture influences both hydrological and agricultural processes and is part of the water and energy cycles through ________.
transpiration
evapotranspiration
evaporation
condensation
Answer:
Its either evapotranspiration or condensation
Explanation:
Hope it helps✌✌
Answer:
The correct answer is evapotranspiration.
Explanation:
Evapotranspiration is the process of water moving from Earth's surface to the atmosphere. The way water moves from the soil to atmosphere is through this process.
can someone help me asap
Which of the following newborns has the lowest chance of having health problems?
A. Charles- 11 lbs
B. Rosalind- 6 lbs
C. Nikola- 7.5 lbs
D. Marie- 5 lbs
Which of these statements is true about autotrophs, but not heterotrophs?
They use sugar and oxygen to make carbon dioxide and water.
They use chlorophyll and oxygen to make carbon dioxide and water.
They use sunlight, water, and carbon dioxide to make sugars.
They use sunlight, water, and oxygen to make chlorophyll.
Answer:
3rd one i think
Explanation:
autotrophs make own food
think about the photosynthesis equation which requires lights, co2 and water to make glucose
Which of the following best describes a hybrid?
A. An offspring produced by parents with different traits.
B. An offspring produced by parents with the same traits.
C. An offspring that displays the same traits as their
grandparents.
D. An offspring that displays different traits from their grandparents.
Answer:
A
Explanation:
An offspring produced by parents with one or more contrasting characters or traits
The best option that describes a hybrid is that it is an offspring produced by parents with different traits.
More specifically, a hybrid is an organism produced from the crossing of 2 organisms that could be of the same species but different traits or of different species entirely.
As such, a hybrid combines the traits of the two parents. Hybrids that result from the crossing of the same species are often fertile while those that result from the crossing of different species are mostly invalid or infertile.
More on hybrids can be found here: https://brainly.com/question/32314
A junction between neurons through which electrical signals pass through are known as _________.
A. Neurotransmitters
B. Axons
C. Myelin sheaths
D. Synapses
(answer: D)
Answer: Synapses
Explanation: I think this the answer
if i am correct.
On the edge of many deserts, there is a delicate area with abundant vegetation. Sometimes cattle are allowed to graze in these areas. The hooves of the cattle compact the topsoil making it less absorbent. Which environmental concern is MOST likely to happen at the edge of the desert when cattle graze there
Answer:
Loss of plant life.
Explanation:
HELP
In humans, ventilation, digestion, and blood flow are important biological processes. Explain the relationship between the structure of tissues or organs and one of these processes.
Answer:
I am assuming the question is asking how do the processes relate to one another.
Explanation:
Ventilation happens in the lungs, where carbon dioxide and oxygen are exchanged in the alveoli. This is done via cappilaries that surround the alveoli. Cappilaries are small blood vessels, which are collecitelvy part of the blood flow system (circulation) of the body. In reguards to the digestion, there are capillaries in the vili (which are tiny finger-like structures) so that they can pick up the nutrients during digestion. Another way blood flow and digestion are connected is because the stomach is a muscle, thus is moves and requires energy. That energy comes from the oxygen and nutrients that is supplied by the blood. These are just some examples.
Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible? (1 point)
O Metals have low electronegativity, so they are conductive because they pass charges easily.
OTwo metals bonded together are going to be more conductive than a metal bonded with a nonmetal.
O The bonds can shift because valence electrons are held loosely and move freely.
O An attraction between a positive charge and a negative charge is created.
The correct answer is; Metals have low electronegativity, so they are conductive because they pass charges easily.
Metals are found towards the left hand side in the periodic table. They are known for their low electronegativity. Metals are electropositive. This means that they loose charges(electrons) easily.
A metallic bond is comprised of positively charged metallic ions and a sea of electrons.These electrons can move freely.
This sea of electrons are the charges that are responsible for the properties of metals such as high conductivity.
Lean more:https://brainly.com/question/10714037
what is meant by photosynthesis
Answer:
Photosynthesis is a physio-chemical process by which green plants use light energy to drive the synthesis of organic compounds. It is an enzyme regulated anabolic process.
Explanation:
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
•Differentiate between virus and viroids.
Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids.
Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.
Answer:
Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids. Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.
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..nok nok tera bhai aaya
The ___________ species concept defines a species as individuals that can produce fertile offspring, while the ____________ species concept defines a species as a group of organisms that share a common ancestry. A. Phylogenetic, Biological B. Heredity, Genetic C. Genetic, Heredity D. Biological, Phylogenetic
Answer: Biological, Phylogenetic
Explanation:
Read the paragraph. [1] Our house was once a stop on the Underground Railroad. [2] It was common for an enslaved person to stop there on their way to the North. [3] The Underground Railroad were a network of hiding places. [4] The cellar beneath our house has a secret door that was installed to trick slave catchers. Which sentence has a subject-verb agreement error? sentence 1 sentence 2 sentence 3 sentence 4
Answer:
sentence 3
Explanation:
edge 2020
In sentence 3 'The Underground Railroad were a network of hiding places' a subject-verb agreement error is observed.
What is a subject-verb agreement?In a sentence when the subject of the sentence does not accept in number with the verb, the sentence misses subject-verb agreement.
In the given sentence 'The Underground Railroad were a network of hiding places' the verb “were” is not matching the subject, it is a subject-verb agreement error.
There would be, 'was' is used as a verb in sentence three, correctly sets the subject-verb agreement. The subject of this sentence is the singular “one,” not the plural “Railroads.” This suggests the verb should also be singular.
Therefore, sentence three correctly depicts the subject-verb agreement error.
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Bees mainly eat the nectar of flowers and in the process get pollen all over their leg hairs, which gets carried to the next flower, pollinating them. This is an example of ___________.
A. Conditioning
B. Predator-prey
C. Mutualism
D. Parasitism
Answer:
C
Explanation:
The process of pollination is an example of mutualism. Thus, the correct option is C.
What is Mutualism?Mutualism may be defined as a +,+ interaction in which both species may be benefitted when living together.
During the process of pollination, the host plant will receive the service of insects to provoke the pollination successfully while in return insects get the food (nectar) and space to live on the plant's flower.
Therefore, the process of pollination is an example of mutualism. Thus, the correct option is C.
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