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Vladimir79 [104]
2 years ago
5

1. Why do they call the horseshoe crab "a living fossil"?

Biology
1 answer:
agasfer [191]2 years ago
3 0

Answer: help help me

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Due to their structure and function they are differ from each other
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How does the author’s use of details convey her point of view about Eleanor Roosevelt’s life and legacy?
Vera_Pavlovna [14]

Author's use of details convey to Eleanor Rossevelt life and legacy are described below.

Explanation:

1.She advocated for expanded roles for women in the workplace, the civil rights of African Americans and Asian Americans, and the rights of World War II refugees. Following her husband's death in 1945, Roosevelt remained active in politics for the remaining 17 years of her life.

2.The fireside chats were a series of evening radio addresses given by U.S. President Franklin D. Roosevelt (known colloquially as "FDR") between 1933 and 1944.

3..President Theodore Roosevelt, an Oyster Bay Roosevelt, was the uncle of Eleanor Roosevelt later wife of Franklin Roosevelt. Despite political differences that caused family members to actively campaign against each other, the two branches generally remained friendly.

4.Champions of Human Rights. Eleanor Roosevelt (1884–1962)

  • Continuing her work on behalf of all people, she advocated equal rights for women, African-Americans and Depression-era workers, bringing inspiration and attention to their causes.

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2 years ago
Use the model here to describe the transfer of matter and flow of energy from one trophic level to another within an ecosystem.
Brrunno [24]

Answer:

A)Biomass is transferred from one organism to another when one organism consumes another organism. When a predator organism eats the prey organism, the molecules on the food are broken down by the digestive system into smaller molecules. These smaller molecules like lipids, amino acids, glucose are used by the organism for various purposes.

B) Energy that is not transferred from one organism to another is either used up by the organism for various purposes. Most of the energy is lost into the environment in the form of heat.

c) There are typically fewer organisms at the top of the trophic levels because energy keeps on declining at each trophic levels so the number of consumers which it can satisfy also decreases.

d) Only 10% of the energy passes from one trophic level to another. The rest is usually lost in the form of heat. For example, if there was 100%  energy in the producers, only 10% would pass to the primary consumers. The secondary consumers will receive 1%.

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2 years ago
The strand of dna used in the previous problem undergoes a mutation, such that the second c from the 3' end is changed to a
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This mutation type is a substitution mutation. Substitution mutations may be silent or may have adverse effects (missense mutation).
Adverse effects come about because the change in codons in mRNA transcribed from the DNA strand. A point substitution can change the amino acid being coded for in the particular polypeptide change. If that animo acid is a structural residue of the protein, the structure of the protein will be altered, which may or may not lead to a change in protein function. If that particular amino acid is a catalytic residue of the protein, it may alter the 3D conformation and charge of the active site (if protein is an enzyme) or the binding site of protein. Function of protein formed from mutated DNA will be lost or altered.

Hope this helps! :)
6 0
2 years ago
Torri and Tamara are both performing scientific investigations on the learning capabilities of mice. In Torri's experiment, she
Dvinal [7]
The conclusion that Torri produced is supported by evidence since she did not switch her dependent variable, giving the mouse a fair advantage of learning which knob to touch 
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