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fomenos
3 years ago
10

Which era spans the least amount of time on the geologic scale?

Biology
1 answer:
Ludmilka [50]3 years ago
3 0

Answer:

Trilobites

Explanation:

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Memories of a Memory
Westkost [7]

Answer:

I think it would be B: Our brains add details and general knowledge to childhood memories.

Sorry if its not correct

Explanation:

3 0
2 years ago
Write a paragraph explaining how genetic variation, reproductive strategies and environmental pressures have impacted the surviv
Andreas93 [3]

Answer: Genetics and Pressures

Explanation:

For natural selection to occur, a population must have a wide variety of individuals with different traits. For example, natural selection would not influence fish body color if all individuals in a population were exactly the same color. Variation of scale color can help a fish species have a higher chance of survival by confusing predators as to what species they are.

Reproductive strategies represent a set of behavioral, morphological, and physiological adaptations that facilitate access to potential mates, improve the chances of mating and fertilization, and enhance infant survival. Male peacocks have bright, big tail feathers, for example, to attract females. If an organism has a high appeal, this will make them more likely to be able to meet and continue the survival of the species.

Environmental pressures, such as plant death, could influence the survival of herbivorous organisms. Say a small land creature consisted off grass, and an epidemic killed all the grass in their region. They would either die off, or they would evolve to find different types of food. The former could reduce population, while the latter could increase it.

4 0
2 years ago
Are centrioles always there? or do they only exist during mitosis
Amiraneli [1.4K]

Answer:yes they do

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3 0
3 years ago
it important to know a person's rhesus factor before a blood transfusion? A patient who is Rh+ can receive only Rh– blood. A pat
timofeeve [1]

The right answer is A patient who is Rh– can receive only Rh– blood.

The blood group is not the only thing that matters, it adds a category: rhesus. Rhesus refers to a red blood cell antigen that is on their wall. There are two blood group systems: Rh positive (Rh +) and Rh negative (Rh-).

Rhesus is positive in people who have this antigen. It concerns the majority of the population. Negative rhesus refers to people without the antigen. This rhesus factor is especially useful to know if a blood transfusion is feasible between two people.

The blood transfusions can be "iso-rhesus", that is to say between Rh + and Rh- but only in one sense: Rh- can give to Rh + but Rh + can not give to Rh-. Again because of the presence of antibodies directed against the antigen in Rh- people.

4 0
2 years ago
Read 2 more answers
O Plasma é um elemento figurado do sangue?
Veseljchak [2.6K]

Answer & Explanation:

As células sanguíneas são classificadas em três grupos básicos: os leucócitos ou glóbulos brancos, que são células de defesa integrantes do sistema imunitário; as hemácias , glóbulos vermelhos ou eritrócitos, responsáveis pelo transporte de oxigênio; e plaquetas, responsáveis pela coagulação sanguínea.

5 0
3 years ago
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