Answer:
Natural selection
Explanation:
Natural selection occurs when one allele (or combination of alleles of different genes) makes an organism more or less fit, that it is able to survive and reproduce in a given environment. If an allele reduces fitness, its frequency will tend to drop from one generation to the next.
Photosystems 1 and 2 are here
Its "C" because the earth only has a certain amount of oil but yet we have endless amount of sun, solar, and wind
Answer:
The correct answer is : parasitism.
Explanation:
Parasitism is a symbiosis relationship in which two organism lives together but only one is benefited and other harm in any means. Toxoplasma is, in this case, parasite which is benefited while cats are host and harmed in this relationship.
Degree and chances of harm or benefit do not defines the symbiosis relationship between two organism. Cats are rarely harmed but still harmed in this relationship.
Thus, the correct answer is : parasitism.
<u>2</u>, <u>1</u>
Igg possesses <u>2</u> binding sites for antigen, and the t-cell receptor possesses <u>1</u> binding sites for antigen.
<h3>IgG: What Does It Mean?</h3>
- Known as immunoglobulin G, It is an antibody of some sort.
- Your immune system produces antibodies, which are proteins, to combat pathogens.
- Your cerebrospinal fluid's levels of IgG are measured using a CSF IgG index.
- Normally, your cerebrospinal fluid contains very little IgG.
<h3>What is the role played by IgG in the body?</h3>
- IgG is typically the most prevalent antibody in blood.
- It guards against infections.
- Therefore, infections are more likely to affect those with IgG deficiencies.
- Your body produces unique proteins known as immunoglobulins or antibodies when it senses an attack.
<h3>When IgG is positive, what happens?</h3>
- The presence of IgG indicates that the infection occurred several weeks to months ago.
- Additionally, it implies that you might no longer be contagious.
- IgG suggests that you might have some viral immunity, though you might not.
To learn more about IgG visit:
brainly.com/question/15280466
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