Answer: a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Explanation:
Helppppppppppppppppp
A biologist creates a large population of genetically identical individuals by chopping up a light-colored adult sponge into tiny pieces and scattering the pieces randomly across a coral reef. Many of the pieces that land on darker backgrounds are eaten immediately by fish. Some pieces grow into adult sponges, especially pieces that land on light backgrounds. Which statement describes how phenotypic frequency would change over time in this sponge population?
Answer:
Natural selection
Explanation:
Natural selection is the main mechanism by which populations adapt and change over time to survive in their environment. Individuals in a population exhibit different gene variants or 'alleles' (i.e., individuals exhibit genetic variation). Some of these alleles are associated with phenotypic traits better suited to the environment than others. Natural selection can change allele frequencies in the population, increasing the frequency of the alleles associated with higher fitness, i.e., those alleles associated with lower mortality and the most offspring in a particular environment. Over time, these advantageous alleles become more common in the population. In consequence, natural selection can be considered as a statement on the expected value of allele frequencies under resampling from one generation to the next.
why can't an observation be an interference
Answer:
Explanation:
An observation cannot be an inference, because an observation takes place before an inference can be determined.
Answer:
Because you are only observing not interfering
Are viruses living or non- living?
Provide short explanation
No links please
Answer:
Virus are non living Things :)
How do nutrients absorbed by the small intestine travel to the individual cells of the human body
Answer:
hepatic portal vein
Explanation:
med.libretexts.org/Courses/American_Public_University/APUS:_An_Introdu
that line the walls of the small intestine absorb nutrients into capillaries of the circulatory system and lacteals of the lymphatic system. Villi contain capillary beds, as well as lymphatic vessels called lacteals. Fatty acids absorbed from broken-down chyme pass into the lacteals.
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The cell wall is a rigid structure that surrounds plant cells. The materials found in the cell wall protect the plant cells and give plants structural support.
Which conclusion can be made given the above information?
A.
The function of a cell organelle can change over time.
B.
The structures of different types of cell organelles are similar.
C.
The structure of a cell organelle is directly related to its function.
D.
The functions of most cell organelles are hindered by their structures.
WILL GIVE BRAINLIEST IF YOU EXPLAIN YOUR WORK!!
1. What is the desired FUNCTION of a garden?
2. What are the subsystems in a garden? Explain.
Answer: A garden is a planned space, usually outdoors, set aside for the display, cultivation, or enjoyment of plants and other forms of nature, as an ideal setting for social or solitary human life. The single feature identifying even the wildest wild garden is control.
Explanation:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). which means gardens to i think
Why is groundwater important?
a.breaks down rocks
b.supplies water to streams
c.used as drinking water
d.used for transportation
Answer: C. Used as drinking water
Explanation:
Part E
Which of the following variables did Pasteur change in his experiment to test the hypothesis of
spontaneous generation?
The variables that Pasteur changed in his experiment to test the hypothesis of spontaneous generation is the shape of the flask
Pasteur in 1856 was known for his contribution to the science world through the study of the causes of spoilage in beer and wine. He demonstrated his knowledge from his discovery of the properties of fermentation by microorganisms.
He demonstrated and discovered that airborne microbes were the cause of food spoilage not a spontaneous generation with his swan-neck flask experiment. He went ahead with a suggestion that if microbes were responsible for food spoilage and fermentation, they could also be responsible for causing infection and this was the foundation for the germ theory of diseases.
In the later year, Pasteur established his previous experiment with a new one. In this new experiment, he made several flasks with long, twisted necks called the swan-neck flasks where he boiled broth and sterilized it. The essence of the swan neck design is to inhibit the introduction of airborne microorganisms into the flask by trapping them between the twists and bends of the flask and also to allow the exchange of air in the flask with the surrounding air.
Based on the theory above, we can conclude that the variables that Pasteur changed in his experiment to test the hypothesis of spontaneous generation is the shape of the flask
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100 POINTS..!!
what is ANTI nuclear?? NOT JUST nuclear BUT ANTI nuclear.
PUT 3 FACTS ABOUT ANTI nuclear ENERGY.
ILL GIVE BRIANLIEST.!
Antinuclear energy or movement, are the social movement opposed to the production of nuclear weapons and the generation of electricity by nuclear power plants.
a gradual increase in air temperatures near Earth's surface.o The possible
consequences of global warming are uncertain but may be severe. They include
melting of polar ice caps, rising sea levels, drought, and an increase in the
frequency and severity of storms. *
Global Warming
O Greenhouse Effect
O Greenhouse Gas
Heat flow
Answer:
This question is incomplete and unclear as the question is not clearly expressed. However, the terms in the option will be explained for better understanding. Please find the explanation below.
Explanation:
Global warming is a phenomenon whereby the temperature of the Earth's surface undergoes a gradual increase. Global warming is caused by the actions of certain gases that possess the ability to trap and emit heat called GREENHOUSE GASES e.g carbon dioxide, methane etc.
The combined effect of greenhouse gases that leads to global warming is referred to as GREENHOUSE EFFECT. Some of the effects of global warming are as follows: melting of polar ice caps, rising sea levels, drought, and an increase in the frequency and severity of storms.
Help pwease kinda stuck lol.
Using what you know about natural selection, explain why there are more brown butterflies than yellow ones.
Plz help me well mark brainliest if correct!!.....
Rinderpest (a virus) has high mortality in wildebeest (a kind of herbivore), especially in young animals. From the early 1960s, after the elimination of a virus called rinderpest, the wildebeest population has increased dramatically from 1958 to 1978. The elimination of rinderpest impacted the wildebeest population. What type of factor is rinderpest
Answer:
density-dependent, top-down factor
Explanation:
In biology, limiting factors are resources and other conditions in the environment whose presence/availability limit the population growth rate. Density-dependent factors refer to the conditions whose effects on the size/growth of the population vary depending on the population density. Some examples of density-dependent factors include diseases, competition, and predation, etc. These factors can exhibit a positive or negative correlation with the population size. Moreover, bottom-up population control (species limitation by resources) refers to limitations placed by resources allowing growth (e.g., food source or habitat), while top-down population control (limitation by enemies), refers to limitations placed by factors that control the death rate in the population (e.g., predation or diseases).
You are interested in analyzing the segregation of petal color in tulips over generations. You are tracking red and white petal colors, and lets assume that petal color results from a single-gene. You know from a trial cross that the F1 progeny from crossing a pure red tulip to a pure white tulip results in all red progeny. For the following questions, use the letters R and r to denote petal color genotype and make sure to clearly indicate the associated phenotypes.
Petal Color Questions
1. Based on the information given above, what do you know about which trait is dominant and which is recessive? Why?
a. If "R" is used to denote the genotype of the dominant allele, which petal color does "R" represent?
b. If "r" is used to denote the genotype of the recessive allele, which petal color does "r" represent?
Answer:
1. R is dominant, and r is recessive. I know this information because the crossing of two pure red and white tulips means that the red tulip genotype is RR, and the white is rr. In other words, they are two h0m0zygous alleles. When we do a Punnet square, we can see that all the progeny is red since it is the trait that dominated over the white one.
a. R represents the red petal color.
b. r represents the white petal color.
Explanation:
To determine which gene is the dominant and which one is the recessive, we have to look at the information that we have.
We know that the cross of a pure red tulip and a pure white tulip results in all red tulips. If we know that they are pure, they are hom0zygonious (RR and rr).
When we draw a Punnet square we can see that the offsprings will all have the genotype Rr and as we knew that offsprings were all red, we can deduce that the domiant trait is red (R), while the recessive one (white) is r. In other words, the dominat gene (red) will express itself while the recessive(white) won't. As a result, the tulips will be red.
║R║ R
r║Rr║Rr
r║Rr║Rr
A strain of a cereal grain can be either dark tan, medium-dark tan, medium tan, light tan, or cream colored. When a dark tan and a cream plant are crossed, all F1 are medium tan. The F2 are distributed in a ratio of 1:4:6:4:1 from darkest to lightest. How many genes are involved in this coloration?
Answer:
The correct answer is - 2 genes.
Explanation:
The number of genes involved in the coloration of the strain of cereal grain, could be either dark tan, medium-dark tan, medium tan, light tan, or cream-colored if all F1 are medium tan when crossed a dark tan crossed with cream-colored, can be calculated as follow:
suppose there are only two gene - TT dominant over tt and CC dominant over cc
then the cross would be - RRCC - rrcc
gametes - RC and rc
Cross F1: RrCc
Self cross in F2:
offspring by Punnet cross are:
RRCC -->1/16
RRCc, RrCC .---> 4/16
RrCc, RRcc, rrCC--->6/16
rrCc, Rrcc--->4/16
rrcc ----> 1/16
thus, the correct answer is 2 genes
while heart rate increases and decreases depending upon activity level, on average a typical persons heart rate is about___ beats per minute
Answer:
The answer is actually A
Explanation:
I honestly dont even know
A colony of bees was observed feeding on nectar while pollinating plants. What type of ecological relationship exists between the bees and the plants?
1 Parasitism 2 Predation
3 Mutualism 4 Commensalism
Answer:
mutualisim
Explanation:
The bees benefit from the flower's nectar and the flowers benefit because they are being pollinated
hope this helps
The benefit of social behavior that refers to searching for and collecting food is referred to as .
Answer:
Ngl bro i like your pfp, its fire
Answer:
Foraging
Explanation:
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What were pregnant women exposed to and what were some of the ways it affected their
children?
(the devil we know.)
Answer:
Here is the answer and some! I hope it helps.
What were pregnant women exposed to and what were some of the ways it affected their children?
Teflon and they had deformities
2.What is the active ingredient in Teflon?
Fluorine
3.When the rats were exposed to c-8 what were some of the effects?
Developed cancers
Explanation:
What is a quantity that describes only the magnitude
Answer:
Scalar quantities are quantities that are described only by a magnitude.
In many large mammal populations, highways can be barriers to movement - individuals rarely cross them. One solution to this problem has been to install overhead bridges for wildlife to safely cross. The goal is to increase gene flow between the populations on either side of the highway. Which of the following would you expect to see if the bridge is successful in its goal?
a) The two populations would have different mutation rates
b) We would see fewer heterozygotes in both populations
c) Higher levels of drift would occur after the bridge is installed
d) The two populations would become more genetically similar
e) Both populations would decrease in size
Answer: c. Higher levels of drift would occur after the bridge is installed
Explanation:
Based on the information given in the question, if the bridge is successful in its goal and overhead bridges are installed for wildlife to safely cross, then there'll be higher levels of drift after the bridge is installed.
Since the highways are barriers to the movement of the wildlife, overheard bridges will bring about movement on the other side of the highway and this will result in and increase in drift between both parts of the highway. This will also help in the increase of gene flow between the populations.
Therefore, the correct option is C.
8. Which of the following can be used to determine the composition of a star?
O A. Light from sunspots
O B. Line spectra
O C. The star's magnetic field
D. Blackbody spectrum
Answer:
Line Spectra
Explanation:
Stars are astronomical or celestial objects that have self-luminosity and are present in the universe. The composition of a star can be determined by the line spectra. Thus, option B is correct.
What are line spectra?The line spectrum has been constituted of the emission of the radiations with wavelengths that makes the isolated lines due to the excited atoms emitting various colors.
The spectroscope detects the Fraunhofer lines with various wavelengths and colors. The various constituent particle of the star will produce different colored lines.
The strength, intensity, and color of the spectral line can be used to determine the various components of the star. The emitted lights are compared to periodic characteristics.
Therefore, option B. the line spectrum can determine the composition of a star.
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reasons for eating animals.
Answer:
Eating animals are a good source of protein and fatty acids that can be difficult to find with vegetarian options
Answer:
Taste good.
Explanation:
mmmmm chicken
Thomas drew a picture of a one-celled organism. He then labeled his drawing as shown in the illustration below.
Which of the following labeled cell parts best identifies the location of genes?
Group of answer choices
Flagellum
DNA
Cytoplasm
Cell Membrane
Answer:DNA
Explanation:
Do all sperm look alike? What are some differences that sperm cells can have?
Answer:
The more different the human is between human sperm to the eggs might just look different that every sperm is different because of the way their inherited DNA.
yeh.....
PLZ help quick I really really really really really really need help
Give three examples of what happens with unbalanced forces? I give Brainly
Which statement describes how humans can decrease an ecosystem's ability to support life?
A. People cut down the trees in a forest, leaving less habitat for squirrels.
B. People build and put up bird houses, giving bluebirds needed nesting space.
O C. People allow small fires to burn in a grassland, returning nutrients to the soil.
D. People remove non-native species from a lake, allowing other plants to grow.
Answer:
A. People cut down the trees in a forest, leaving less habitat for squirrels.
Explanation:
A large percentage of the depletion of an ecosystem can be attributed to anthropogenic or human activities. Ecosystems are naturally known to support or inhabit life. For example, many trees in an ecosystem are homes to living organisms such as birds, insects, snakes etc.
However, according to this question, an exemplary description of how humans can decrease an ecosystem's ability to support life is when "people cut down the trees in a forest, leaving less habitat for squirrels". This act will decrease the forest's ability to support life.
