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pentagon [3]
3 years ago
7

Which of the following is the best example of a keystone species?

Biology
2 answers:
IRINA_888 [86]3 years ago
8 0

Answer:

a

Explanation:

umka2103 [35]3 years ago
6 0
I think a would be the answer
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Cellular respiration occurs in the body 24 hours per day. During exercise, the rate of cellular respiration increases. Why does
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Answer:

because the body requires a higher supply of oxygen

Explanation:

Cellular respiration can be divided into two different metabolic processes: aerobic respiration which needs oxygen (O2) and anaerobic respiration (without O2). The aerobic cellular respiration is produced when glucose molecules react with O2 in order to form ATP, the energy currency of the cell. Aerobic cellular respiration is the main source for generating ATP. During exercise, the requirement of O2 will be higher because the cellular respiration rate is increased in order to produce more energy (ATP). In consequence, during physical activities, it is required have to breathe faster to supply this O2, which enters into the lungs to be transported to all the cells through blood circulation.

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3 years ago
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Name the invention that made agriculture much more efficient
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Answer:

Corn Picker. In 1850

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Plow.

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there are some agriculture inventions  

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Many insects have a tough outer shell called _____. an exoskeleton cellulose an endoskeleton chitin
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The correct answer is an exoskeleton
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What would be the environmental impact of humans using more renewable resources from the environment?
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Answer:

This will reduce the average temperature of the planet and lessen the catastrophic effects of climate change.

Explanation:

Renewable resources do not emit greenhouse gases making them the cleanest, the most sustainable solution to prevent environmental degradation. If humans slowly transition to an energy system that is based on renewable technology, this will have a very positive economic consequences as well for economist foresee an increase in well-being and in employment and less cost while allowing development today without risking the future generations.

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