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Ivahew [28]
3 years ago
15

The total area of land and water ecosystems and individuals needs to obtain food shelter home heating travel and waste absorptio

n is called
A. a Land Management plant
B. an environmental problem
C. an ecological footprint
D. a measure of diversity​
Biology
2 answers:
meriva3 years ago
6 0
I’m not entirely sure but i think it’s A
salantis [7]3 years ago
3 0
B. And environmental problem should be correct
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A child was exposed to a disease-causing virus (most likely chicken pox from the Varicella zoster virus) when he was 5 years old
STatiana [176]

Answer: What is expected to happen is that the secondary immune system acts immediately against the virus.

Explanation:

When a virus first enters our body, in order to defend itself, the body must first recognize what the antigen is in order to fight it through <u>antibodies</u>. Once it does it will keep a memory of it that it can use if this virus enters the body again. <u>This will be done through the secondary immune system</u>.

As the body already recognizes the antigen, it knows how to fight it immediately, generating a thousand times the amount of antibodies generated the first time.

Thanks to its memory cells, the virus will remain much less time in the body.

8 0
3 years ago
Which of the following does NOT describe a basic regulator of digestive control?-Short reflexes act locally in the GI tract.-pH,
spayn [35]

Answer:

conscious neural control

Explanation:

Neural control of digestive tract is unconscious achieved via the autonomic nervous system.

Local nervous system of the digestive system is called the enteric or intrinsic nervous system. The major components of this nervous system are two networks or plexuses of neurons:

• The myenteric plexus – controls digestive tract motility

• The submucous plexus - regulates gastrointestinal blood flow and controls epithelial cell function.

3 0
3 years ago
A pattern of reproduction and growth in a one- celled organism is shown below. Nucleus Which statement best describes this patte
iogann1982 [59]
It is a. all genetic material comes from one parent
4 0
2 years ago
A mutation in a polypeptide with the original amino acid sequence of: Met-Ala-Gln-Arg-Glu-Leu results in a mutant with the seque
Nezavi [6.7K]

Answer:

This question lacks options, however, it can be answered based on general understanding of the topic

The answer is SUBSTITUTION MUTATION

Explanation:

A mutation is any change that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. One type of mutation is SUBSTITUTION MUTATION, which is a mutation in which one or more nucleotide base is replaced by another in the sequence.

Nucleotide bases are read in a group of three called CODON. Each of these codons specify amino acid. Hence, if the nucleotide base sequence is altered during mutation, the amino acid sequence is altered likewise. In this case where the original amino acid sequence is: Met-Ala-Gln-Arg-Glu-Leu, the mutation affected the nucleotide bases coding for Arginine (Arg), hence changing it to Glycine (Gly).

This means that a base substitution mutation occured, replacing the amino acid Arginine with Glycine in the mutated sequence.

6 0
2 years ago
What is true about the efficiency of energy transfer in an ecosystem?
Schach [20]
<span> Very inefficient. Almost 90% of all energy is lost between trophic levels. That is why larger animals need to eat more, because less energy is being consumed. 
</span>
8 0
2 years ago
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