The fossil bird and salamander both have different tail structure because they both inherited tails from a shared ancestor population initially, but this population eventually separated into different environments.
In order to adapt into their immediate environment they both evolve their tail structure to carry out different functions.How does evolution occur? It is the change in the phenotypic characters of a species over several generation resulting from natural selection and genetic drift.The the tail of salamander was evolved to store fat and proteins, assistance in the movement, hence it has long tail with many bones for ease of movement.
Whereas birds short and light weight tail for the ease of flying and normal functioning.
Hence, different body structure evolved from the same ancestors for the adaptation in different species.
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It is recommended that children eat foods high in calcium and iron as a way to reduce the accumulation of lead in their cells and enzymes. Explain why this is a scientifically valid recommendation.
Why does the kidney need 1 million nephrons instead of one whole unit to carry out its function
The movement of water across a membrane does not require a concentration gradient.
A. True
B. False
Answer:
false
Explanation:
because it is osmosis any liquid (water) can move through the membrane withought energy
Answer:
False
Explanation:
WITH SPECIFIC EXAMPLES, BRIEFLY DESCRIBE HOW FOOD CHAIN IS RELATED TO FOOD WEEB. Help please
Answer:
A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.
Explanation:
Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web.
The offspring in binary fission are
identical
different
Answer:
Identical
Explanation:
Binary fission is a form of asexual reproduction. This is when only one parent is involved in creating offspring. Since there is only one parent, two sets of DNA cannot be combined into a new offspring; so, it must be identical.
During the process shown above, the two strands of one DNA molecule are unwound. Then, DNA polymerases add complementary nucleotides to each strand which results in the formation of two identical DNA molecules.
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Answer:
This question is incomplete as it lacks image, however, it can be answered based on the description. The complete part of the question is:
" This process is known as dna _______. A.) transcription B.) translation C.) cloning D.) replication
The answer is D. replication
Explanation:
DNA replication is the process whereby a DNA molecule is duplicated to form to identical copies of itself. The process of DNA replication is very pivotal and must occur prior to any cell division.
This process follows the semi-conservative model in which the double-stranded DNA molecule unwounds into two separate single strands. The single strands are then used as template for the synthesis of another complementary strands by DNA polymerase enzyme. At the end, the two DNA molecules are identical in base sequence.
Can someone plz help me
Answer:
Circulatory system and Respiratory system
The graph shows the growth and reproduction in 4 different cells, A, B, C, and D, over time. Use the graph to answer questions below.
Answer: A.
Explanation:
Cells generally have a relatively short lifestyle in that they grow, divide and then die off. This is not the case with cancerous cells as those ones mutate and then multiply such that they eventually form a tumor.
Looking at the graph, most of the cells are remaining at a lower or manageable number because they are dying off. Cell A on the other hand is simply increasing in number which means that it is a cancerous cell as it is increasing its number by mutating instead of dying off like other cells would.
which of the following is good for a plant?
Answer:
c,d
Explanation:
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Other than mountains, what else could cause geographic isolation?
Answer:
Other than mountains, what else could cause geographic isolation? population to start a new population. genetic drift -change in allele frequency in a small population due to random chance. migration - some organisms move away to start a new population
Explanation:
thank me later
From HIPPO, which one causes the most loss of biodiversity and explain why??
Answer:
There are many threats to biodiversity today. The biggest ones can be remembered by using the acronym H.I.P.P.O.: Habitat Loss, Invasive Species, Pollution, Human Population, and Overharvesting.
Structures and behaviors for animals to obtain food
Select one:
a.
Adaptations
b.
Respiration
c.
Digestion
Which is the main material in a solar cell?
A. carbon
B. phosphorus
C. silicon
D. boron
Answer:
C.Silicon
Explanation:
By far, the most prevalent bulk material for solar cells is crystalline silicon (c-Si), also known as "solar grade silicon". Bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon or water.
Answer:
C. silicon is the main material in a solar cell .
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hi! i’ll give brainliest please help
Answer:
Water flow becomes slower when the river bends.
Explanation:
The sediment cannot be left behind if it goes too fast. So, the river slowed down.
Answer:
I say the answer is A the first one!!
Explanation:
My answer is A the first one!!
If 25% of a population has a recessive allele and 75% have the dominant trait for a 2-allele trait, if in Hardy-Weinberg Equilibrium then what would the percentage of recessive alleles be in that population
Answer:
q = 0.5
The percentage of the recessive allele is 50%
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
The development of this new BLG-free, hypoallergenic milk is based on a science that came to the forefront 150 years ago. What scientist's work provided the basis for such feats in biotechnology?
Answer: Mendel and genetics
Explanation:
Explain why DNA Sequencing proves that all species have a common ancestor
Answer:
Below
Explanation:
The reason why we can conclude that all species have common ancerstory is that all the species have several same base pairs. Here are a few listed:
A-G-G-C
As well as this later on:
C-C-A-A-C-C
Because this strand of DNA has several common base pairs, we can conldude that the species have common ancestory that made it this way.
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What is the answer to this?
Plsss helpp
Into what kingdom would each of the following be classified:a. Unicellular prokaryotes that live in dust. _______________________[Text Wrapping Break] b. Unicellular eukaryotes that line in pond water. _____________________[Text Wrapping Break] c. Multicellular eukaryotes that live all over the planet and consume food. ______________________ [Text Wrapping Break] d. Unicellular prokaryotes that live in volcanic ash. __________________________[Text Wrapping Break] e. Multicellular eukaryotes that have cell walls and are heterotrophic. _______________________[Text Wrapping Break] f. Multicellular eukaryotes that have cell walls and are autotrophic. ________________________
Answer:
A. Unicellular prokaryotes that live in dust. Monera.
B. Unicellular eukaryotes that line in pond water. Protist.
C. Multicellular eukaryotes that live all over the planet and consume food. Animals.
D. Unicellular prokaryotes that live in volcanic ash. Monera.
E. Multicellular eukaryotes that have cell walls and are heterotrophic. Fungi.
F. Multicellular eukaryotes that have cell walls and are autotrophic. Plants.
Explanation:
The 5 kingdoms are a way of classifying all living organisms on our planet, as each species inside a kingdom shares similarities with the other species in it.
Monera kingdom includes all of the prokaryotic organisms that exist, which includes bacteria and archaea. These beings are characterized by lacking a nucleus and membrane-bound organelles and having one single circular chromosome that is found in the center of the cell. They are unicellular. Example: escherichia coli.
Protists are the most primitive eukaryotes that exist, most of them are unicellular and microscopic, but possess a nucleus and specialized organelles like the rest of the eukaryotes have. Example: yeasts.
Fungi and Plants are quite similar, they are multicellular eukaryotes that have cell walls. Their main difference relies on the way they obtain nutrients: fungi are heterotrophs, they feed off living things; plants, however, are autotrophs and realize photosynthesis (they do not need to feed). Fungi and Plants also reproduce differently: fungi reproduce through spores; plants can reproduce sexually or asexually. Fungi example: amanita; plant example: cactus.
Animals are multicellular eukaryotic organisms that reproduce sexually and are heterotrophs (some feed off plants, some feed off other animals). They are characterized by their ability to move. Example: horse.
What allowed the peppered moths to make the comeback? What could happen to the species if only the dark-winged moths had survived the pollution era?
Describe the trophic levels in a community
Use Darwin's theory of Natural Selection to explain the process by which the four-legged land animal, A, may have evolved, over about 20 million years, from the fish-like creature, C, in the swampy conditions of the time.
Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
I need someone to help me!!
Answer:
I believe the answer is B. Vomiting and Fever.
Explanation:
This answer makes the most sense as spoiled food can lead to sickness, which can lead to vomiting and fever.
The Human Immunodeficiency Virus (HIV) prevents the body from being able to fight off infections. TRUE or FALSE
Answer:
HIV (human immunodeficiency virus) is a virus that attacks the immune system. The immune system becomes weaker, making it harder for the body to fight off infections and some kinds of cancers. Most people who are diagnosed early and take medicines for HIV can live long, healthy lives.
(I found this answer from the web so credits to them :)
what is chemical reaction?
Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
Explanation:
Which organ releases the hormone insulin in order to regulate the level of blood sugar in the body?
Gall Bladder
Liver
b. Pancreas
d. Spleen
Answer:
Pancreas
Explanation:
Insulin is an essential hormone produced by the pancreas.
Answer:
Pancreas
Explanation:
During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.
n NaO2, what does the 2 represent?
Answer:
In the element (n Na20) the 2 means that there are 2 oxygen atoms in the Sodium Oxide.
Where does the carbon comes from that makes up the glucose molecules?
Answer:
from CO2
Explanation:
Answer:
carbon dioxide
Explanation:
The carbon atoms used to build carbohydrate molecules comes from carbon dioxide, the gas that animals exhale with each breath. The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules
Answer the following question in the attached image. Thank you
how does global warming affect el niño and la niña
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