The first question is the first option (4 haploid cells; 2 diploid cells).
The second question is the first option also (nitrogen).
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This would result in whatever effectors that spinal nerve controlled would no longer work; it would be paralyzed
Answer: A
Explanation:
With a decrease in predators there is no challenge for the prey and population growth can become uncontrollable
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Answer:
short answer: The Earths atmosphere
Explanation:
The Earth's atmosphere protects us from the multitude of small debris, the size of grains of sand or pebbles, thousands of which pelt our planet every day. So the probability of a major collision is quite small
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