Answer:
Natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution
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Natural selection generally results in a population that is adapted to its current environment. The correct option is B.
What is natural selection?Natural selection is the process through which population numbers of living organisms adapt and change.
Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.
As long as there is some difference between them and that difference is heritable, there will inevitably be a selection of individuals with the most advantageous differences.
Natural selection is a process of evolution in which lifeforms that have beneficial traits procreate more effectively than those lacking the traits, leading to an increase in the frequency of the advantageous things over time.
Thus, the correct option is B.
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what are the structural adaptation of whales and dolphins (compare them please)
Answer:
Whales and dolphins are mammals and have lungs instead of gills for breathing. They have blowholes at the tops of their heads that function like nostrils; they need to put their heads above water every so often to breathe. Both dolphins and whales have hair instead of scales, another quality that is specific to mammals. The animals have live births instead of laying eggs, and baby dolphins and whales nurse from their mothers. Whale and dolphin births take place near the surface of the water, so the young animals can easily take their first breath.
Both whales and dolphins rely on the sounds they make for survival, even though the sounds are utilized differently by each animal. For instance, whales make high-pitched groans and whistles to communicate with one another to warn against danger or navigate during migration
Answer:
COMPARISON AND CONTRAST OF WHALES AND DOLPHINS
Both dolphins and whales belong to the cetacean family and are marine animals that reside in the ocean. Some scientists even assert that dolphins are a type of whale, as the two animals have a number of shared characteristics. However, there are distinct differences between whales and dolphins as well that will teach you more about the physical appearance of these marine creatures and how they survive in their environment.
Identy three advantages and three disadvantages of bioplastics
Explanation:
Advantages of bioplastics
1.Less oil is used to produce petrochemical (oil-based) plastics which pose a great risk to the environment.
2.The common bioplastics can be injection molded and shaped to take the same form as traditional thermoplastics. In some cases, the bioplastics are stronger and lighter, too, so they are not necessarily only suitable for very niche applications.
3.Bioplastics are more marketable, for example, their usage may improve the value-add of a product through a green marketing campaign. After all, studies have shown that ‘80% of European customers want to buy products with a minimal impact on the environment,’ so bioplastics may represent a useful argument for brands.
Disadvantages of bioplastics
1.First, bioplastics are generally NOT cost-competitive compared to their oil-based counterparts. They are generally two or three times more expensive than the major conventional plastics such as PE or PET, and their production is plagued by low yields and being expensive. This disadvantage should be less acute when manufacturing plants become larger and benefit from economies of scale. A good example is Braskem’s 200,000-tonne bio polyethylene plant (equivalent to about 20% of the world’s current bioplastics production).
2.There is a concern that bioplastics based on terrestrial crops could harm food supplies; however, new innovations using food waste could be helpful in this regard and the concerns would seem to be unfounded as: ‘Perhaps 300,000 hectares are used to grow the crops which the industry processes into plastics. For comparison, this is about 0.02% of the world’s total naturally irrigated area available for cultivation. Even if half the world’s plastics were made from crops grown on food land, the industry would only require 3% of the world’s cultivated acreage.’
3.Crop-based bioplastics require fertile land, water, fertilizers, and are reliant on weather conditions. This means that the supply of raw materials for bioplastics are at risk of natural phenomena, such as drought.
Answer:
Three advantages of bioplastics:
1. Saving fossil fule
2. Reduction of greenhouse gas emission
3. Reclamation of by-products
Three disadvantages of bioplastics:
1. It won't biodegrade in a landfill
2. It contaminate plastic recycling streams
3. It encourage people to litter more
Explanation:
Hope it will help u
In the early days of life on Earth, plants were exposed to extremely high doses of ultraviolet radiation. Constant UV exposure resulted in some land plants developing narrow leaves with thick, waxy cuticles. Over many, many generations, these narrow leaves evolved into needles.
Answer:
so, what is the question?
Explanation:
Which is more complex and less complex organism biosphere cell ecosystem
Answer:
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
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6. If the time period were extended to 6 hours, what would be the expected blood sugar level for
Person B?
According to the graph, the blood sugar level for person B is 130 mg/dL after 6 hours of eating meal.
The blood sugar level is highest just after eating the meal but with the passage of time, the concentration of blood sugar level decreases due to absorption by the body. One hour after eating the meal, the blood glucose level is slightly decreases but after 6 hours, the blood glucose level tends to very low due to more consumption of the body or storing by the body in different parts.
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easy biology question below first correct answer gets brainliest
Answer:
Vestigial in that sense that the organ seemingly has no functions or useless now but they might have functions previously which are lost someway due to evolution. ... The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm
Explanation:
What is a limiting factor?
Answer:
A limiting factor is anything in an environment/ecosystem that limits a population's size. They can be anything from the amount of available food, shelter, and competition.
albinism is an inherited condition in which pigment does not develop in the skin, hair, and eyes.
the allele for albinism is recessive.
what are the chances of albino parents having an albino child?
a) 0% b) 25% c) 75% d) 100%
Answer:
25%
Explanation:
i'm sure its 25% chance of albino parents having albino child
what's the cell wall of a onion made up of?
Answer:
Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape.
Answer:
cell membrane,cytoplasm,nucleus and a large Vacuole.
Explanation:
An onion is a multicellular(consisting of many cells)plant organism.As in all plant cells,the cell of an onion peel consists of a cell wall.
what is role of the stomach in the human digestion system
Explanation:
The stomach is a hollow organ, or "container," that holds food while it is being mixed with stomach enzymes. These enzymes continue the process of breaking down food into a usable form. Cells in the lining of the stomach secrete a strong acid and powerful enzymes that are responsible for the breakdown process. When the contents of the stomach are processed enough, they’re released into the small intestine.
Answer:
first the stomach secretes the gastric juice which is made up of digestive enzymes and digest the hydrochloric acid and plays a big role in digesting nutrients.
Explanation:
hope it helps
what do you mean by bacteria?
Answer:
Bacteria is a type of micro-organism and is also a prokaryote. These organisms can only be seen using a microscope. Some bacterias are harmful while some are helpful for human daily lives, such as probiotics, and are necessary for life. They have simple cell structures as there is no nucleus or membrane-bound organelles. Bacterias can be found in soil, water, plants, animals, etc. They can cause diseases such as Tuberculosis etc. Due to some diseases being caused by bacterias, doctors prescribe Antibiotics which has the ability to stop the activities in bacterial cell that causes it to lose its protective outer covering and completely stops it from multiplying.
Answer:
Bacteria are among the smallest living things. A single bacterium consists of just one cell, and is called a single-celled, or unicellular organism.
Even though it is just a single cell, it can carry out all seven life processes (movement, respiration, sensitivity, growth, reproduction, excretion and nutrition).
__plants important adaptation of the seed allowed plants to__
A. Non vascular, grow in underwater environments
OB. Angiosperm, attract pollinators
C. None of these
D. Gymnosperm, spread quickly across the land
Answer:
C
Explanation:
Non vascular plants reproduce by spores or other asexual means
Attraction of pollinators is not an adaption of the seed. In angiosperms the colorful petals attract pollinators.
adaptations of seeds is their ability to store food, be dormant for preservation. They do not adapt to spread across the land via Gymnosperms. seeds can spread around via animals who eat the fruit and move from place to place. Gymnosperms do not produce flowers, so they don't have fruits. Though wind may blow their seeds, it's still not an adaptation.
Gymnosperm plants important adaptation of the seed allowed plants to spread quickly across the land.
So, option D is correct option.
Non vascular plants reproduce by spores or other asexual means.Attraction of pollinators is not an adaption of the seed. In angiosperms the colorful petals attract pollinators.The seeds spread around via animals who eat the fruit and move from place to place. Gymnosperms do not produce flowers, so they don't have b. Though wind may blow their seeds, it's still not an adaptation.What is adaptation?It is biological mechanism.In this organisms adjust to new environment or changes in their surroundings.Example: Plant called succulents adapted to climate by storing water in their shorts, thick stem and leaves.Learn about adaptation,
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What are the three examples to justify Newton first law of motion .
I have to write a hypothesis based on if plants need sunlight
I would put one plant inside and one outside with everything they get the same except the amount of sunlight
Answer:
Sunlight is related to plant growth. If the amount of sunlight is increased, then plant growth will increase. The hypothesis that plant growth increases as the amount of sunlight increases was supported by the data.
Question 4
What happens to the host cell at the end of the lytic cycle?
the cell breaks open and releases the new viruses
viral DNA combines with host DNA
the host cell divides normally and reproduces viral DNA along with it's own
new viruses are made inside the bacterial cell
Answer:
In the lytic cycle, a phage acts like a typical virus: it hijacks its host cell and uses the cell's resources to make lots of new phages, causing the cell to lyse (burst) and die in the process.
Explanation:
Hope this helps.
is there any evidence to prove that the earth is spherical
Answer:
physics.
Explanation:
Answer:
Satellites
Explanation:
Satellites take images and they launched a camera up to the moon and captured what the earth look liked
In order for a physical barrier to be effective in preventing infection, the barrier must __________. A. prevent the substance from entering the body, trap the substance when it first enters the body, or flush the substance out of the body B. destroy the substance before it enters the body, prevent the substance from reproducing, or flush the substance out of the body C. trap the substance in t
Answer:
a
Explanation:
Why do you think engineers working on the Venice Tide Barrier project are following the Engineering and Design Process?
A. A creative, effective solution an be developed
B. The Engineering and Design Process costs more time and money
C. It eliminates the need for creativity
D. Over time, there will be no need to brainstorm or test ideas
Answer:
Please correct me if I’m wrong but I believe it’s cause it’s A
Explanation:
sorry If I answered your question wrong I didn’t mean to I really tried
Answer:
listening the money by the drums
Explanation:
How would a river that drains a watershed be affected if a portion of forest
uphill from the river was converted into a city with mostly impermeable
surfaces?
A. The river would decrease in size due to more runoff.
B. The river would increase in size due to more runoff.
C. The river would increase in size due to more rain seeping into the groundwater.
D. The river would decrease in size due to more rain seeping into the groundwater.
Answer:
d
Explanation:
d
can you suggest me some biology experimental project work topics?
Answers:
1. General
2. Reproduction
3. Health
4. Genetic Engineering
5. Technical Experiments on Humans
6. Relationships and Media
7. War
8. Information and Communication Tech
9. Computer Science and Robotics
which statement correctly pairs the organelle with its function
Answer:
smooth endoplasmic, metabolism, lipids
Explanation:
these are the answers hope this helps you out.
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answer:
the correct answer is option ( A ) pons
Explanation:
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Mark my answer as brainlist
have a nice day
Answer:
A. Pons
Explanation:
I got it right on my quiz :)
In the rock cycle, if any type of rock is broken down into little pieces, it changes into ______ rock.
Answer:
small rock
Explanation:
hope it's helpful
Does anyone know the answer for the question four?
Answer:
I think it's A
Explanation:
it is because the populations of trees are decreasing as deforestation continues, so there is less resistance to greenhouse gases. please correct me if I'm wrong
list any 6 medical plants
Answer:
Explanation:
The 6 medical plants are :
1. Chamomile. (Flower) Considered by some to be a cure-all, chamomile is commonly used in the U.S. for anxiety and relaxation. ...
2. Echinacea. (Leaf, stalk, root) ...
3. Feverfew. (Leaf) ...
4. Garlic. (Cloves, root) ...
5. Ginger. (Root) ...
6. Gingko. (Leaf) ...
Which of the following is NOT an organ system in the human body?
A. Endocrine system
B. Replicatory system
C. Digestive system
D. Lymphatic system
Paragraph explanation of biosynthesis
Answer: Biosynthesis is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways.
My pet mouse had babies and then it ran away and i dont know what to do
What is a scientific inference? (1 point)
O an inconsistency or weakness in reasoning
a conclusion made from an observation
O an opposing idea to an argument
O a critique of a scientific idea
An inference has been defined as deductions based on the facts and evidence. The scientific inference is a conclusion made from observation. Thus, option B is correct.
What is a scientific inference?The scientific inference is a term that describes the conclusion of the experiment based on the observations and the evidence that supports the facts and data of the hypothesis.
It is a deduction and conjecture that are reached after an experiment or a procedure is performed that provides the observatory data which can be analyzed.
A scientific inference provides an informed guess that interlinks and sets the relationships between the sciences. Though they may be guesses they are based on observed evidence.
Therefore, option b. the scientific inferences are guesses made from observations.
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Defining Populations
List three scales at which populations can be defined, from largest to smallest. Population groups
