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timama [110]
2 years ago
15

Two models for the speed of speciation are based on patterns in the fossil record. Which of the following statements describes t

he punctuated equilibrium model of evolution? Natural selection is unimportant as a mechanism of evolution. Most evolution occurs in sympatric populations. Given enough time, most existing species will gradually branch into new species. Species accumulate their unique features rapidly, then change little for the duration of the species.
Biology
1 answer:
harkovskaia [24]2 years ago
3 0

Answer:

This is not correct, don't pick Given enough time, most existing species will gradually branch into new species.

Explanation:

It might be Species accumulate their unique features rapidly, then change little for the duration of the species.

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1.Identify the role of endocrine glands in growth/development, and in regulation of metabolism.
DIA [1.3K]

In this question we are going to answer a series of questions about the human endocrine system, hormone release and homeostasis.

<h3>What is human endocrine system, hormone release and homeostasis?</h3>

1. Endocrine glands produce hormones and release them directly into the bloodstream.

Hormones are the products of secretion from the endocrine glands. They control various activities in the human body, hence the importance of these glands.

2. It is through the feedback mechanism that, for example, the regulation of hormone secretion and the control of temperature and blood pressure occur.

Thanks to this control, it is possible to guarantee the harmony of the systems and, consequently, the homeostasis (balance of the internal environment).

3. Hormones can be divided into four groups, based on their chemical structure,form of synthesis and storage, solubility, half-life, form of transport, receptors on cell and mechanism of action:

  • Peptides
  • Steroids
  • Amines
  • and Eicosanoids.

Both positive and negative feedback are extremely important for our body to function properly. However, these two mechanisms have differences. In negative feedback, the body produces a response that reduces the initial stimulus, while in positive feedback, the response reinforces the stimulus.

Learn more about Hormones in brainly.com/question/13020697

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7 0
2 years ago
Why would prokaryotic cells be considered a simple cell when compared to eukaryotic cell?
Ede4ka [16]

Answer:

Prokaryotic cells are more simple and smaller than eukaryotic cells. Prokaryotic cells are structurally more simple because of their small size. It's also defined as the smaller a cell size, the greater is its surface to volume ratio (means surface area of a cell compared to its volume).

In smaller prokaryotic cells, a large surface to volume ratio is present. It means that nutrients can rapidly and easily reach any interior part of the cell.

The large eukaryotic cell have limited surface area as compared to its volume it means that nutrients cannot rapidly reach to all interior parts of the cell, because of that eukaryotic cells are more complex than prokaryotic cells, and they require specialized internal organelles to carry out processes like provide energy, metabolism and transport necessary chemicals throughout the cell.

3 0
3 years ago
Give an example in which adding a new species to an ecosystem increases its biodiversity​
miv72 [106K]

Answer:

Well to give a good example of "ecosystem increases its biodiversity​" we must first define

biodiversity

"the variety of life in the world or in a particular habitat or ecosystem."

SO an example would be like bringing a frog from china to a pond in amercia,but this frog is new and there arent any frogs from the speicus

3 0
3 years ago
The leaves, stems and roots of a plant are considered
boyakko [2]
C.organ

because stems, roots and leaves are not seen b with microscope, they are not tissues but organs. and not organ system because root system etc are organs systems
May be I have not explained well but it is the correct option.
7 0
3 years ago
Read 2 more answers
Fruit flies use the Z-W sex determination system<br><br> True or false
const2013 [10]

Answer:

The answer to this question is false

3 0
3 years ago
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