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umka2103 [35]
3 years ago
7

If intelligence is so useful, why do so few species have it?

Biology
1 answer:
marissa [1.9K]3 years ago
3 0

Explanation:

Could intelligence simply be unlikely to evolve? Unfortunately, we can’t study extraterrestrial life to answer this question. But we can study some 4.5 billion years of Earth’s history, looking at where evolution repeats itself, or doesn’t.

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High levels of mercury contamination have entered the aquatic ecosystem primarily through:
Vika [28.1K]

Answer: Option C.

Emissions from coal burning plants which then rain down on water ways.

Explanation:

Mercury has been found to be most serious and most common water contaminants. Mercury causes water pollution. It is released into the air and falls back in water ways. When it's get to water ways, bacteria changes it to methylmercury, if absorbed by aquatic organisms destroyed them. When consume by humans, it causes neurological disorder and kidney problem. The two major sources of Mercury contaminants in water ways are emissions from burning of coal plants and waste incinerators.

7 0
3 years ago
In aerobic respiration, what is the direct source of energy that atp synthase uses to synthesize atp?
leonid [27]
For the answer to the question above asking <span>In aerobic respiration, what is the direct source of energy that ATP synthase uses to synthesize ATP?</span><span>I think this is Proton Gradient. It is t</span><span>he product of the electron transport chain. A higher concentration of </span>protons <span>outside the inner membrane of the mitochondria than inside the membrane is the driving force behind ATP synthesis.</span>
4 0
3 years ago
Does cellular respiration result in a net input of energy or a net output of energy?
otez555 [7]

Answer:

Cellular respiration results in net output of energy.

Explanation:

Cellular respiration can be described as a process in which cells convert glucose and oxygen into carbon dioxide and water. Energy is released in the form of ATP in the process hence, it gives a net output of energy.

As a result of cellular respiration, two molecules of energy (ATP) are produced in glycolysis, Kreb's cycle also produces 2 molecules of ATP, 34 molecules of energy (ATP) are produced by the electron transport chain

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A device that changes electrical energy into mechanical energy?
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A device that changes electrical energy into mechanical energy is a electric motor.
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3 years ago
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In photosynthesis, what are two major reaction that take place.
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The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.

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