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valentina_108 [34]
3 years ago
13

Which of the following is true about top predators? Select one: a. They include bacteria and fungi. b. Their removal increases b

iodiversity. c. They are likely to be herbivores. d. They are often keystone species. e. They are likely to be producers.
Biology
1 answer:
Len [333]3 years ago
4 0

Answer:

d. They are often keystone species

Explanation:

Top predators in an environment are the largest predators and sits on the top (apex) of the food chain in an ecosystem which do not have any natural predators.

As the top predators relative to its abundance has disproportionately large effect on its natural environment, they are the keystone species most of the time.

Hence option d. They are often keystone species is the right  option.

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The ________ division of the autonomic nervous system is often called the "rest-and-digest" division.
Ad libitum [116K]

Answer:

Parasympathetic nervous division

Explanation:

The parasympathetic division of nerves is a part of the autonomic nervous system which gets activated during the relax conditions.

The parasympathetic nervous system is the opposite of the sympathetic nervous system which gets activated during the stress condition.

The parasympathetic division gets activated when the level of cortisol and adrenaline gets decreased and the body responds by detoxifying, digesting and building immunity.

Thus, Parasympathetic nervous division is the correct answer.

4 0
3 years ago
Crude oil is ________. a. composed of less than ten different hydrocarbon molecules b. usable in its raw form c. formed in a wid
kolbaska11 [484]

Crude oil is <u>refined to separate the chemicals used for gasoline, lubricants, plastics, and other products.</u>

<u />

  • In a distillation tower, the crude oil is separated by boiling point after being heated by a furnace.
  • The material is then transformed into finished goods like fuels like gasoline and diesel, as well as specialty items like asphalt and solvents, by using heat, pressure, or a catalyst.
  • Ethane, liquid petroleum gas (LPG), and naphtha are the three main petrochemical feedstocks generated from crude oil.
  • These are mostly employed in the creation of synthetic fibers, plastic polymers, and other petrochemical intermediates.
  • With increased global income, demand for these products will only continue to rise.

learn more about Crude oil here:

brainly.com/question/23630905

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5 0
1 year ago
How did the earliest ancestors, microorganisms, eat?.
antiseptic1488 [7]

Answer:

Most of the earliest microorganisms were prokaryotes so it would make sense for them to go through photosynthesis to create glucose for energy. They also could have gotten energy from salt water.

Explanation:

3 0
2 years ago
When an organism reproduces asexually it usually has what ?
lesantik [10]
Only prokaryotes (the archaea<span> and the </span>bacteria<span>) reproduce asexually through binary fission. Eukaryotes (such as protists and unicellular fungi) reproduce by mitosis; most of these are also capable of sexual reproduction</span>
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2 years ago
Joe was told that the tumor in his brain is benign. this means that the tumor is?
Klio2033 [76]
Benign means that the growth doesn’t spread to other parts of the body and the tumor is noncancerous.
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1 year ago
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