I'm not sure but think its A
Answer:
Causes. Three main causes of ecological succession are identified for the process of succession. Initiating causes - The initiating causes include biotic and climatic factors which destroy the existing populations of the area. The climatic factors include wind, fire, natural disasters, erosion, etc.
Explanation:
Answer: So there are 5 levels,
to describe it you'd have to say :
At first level there are CELLS that makes up the TISSUES in hich the tissues makes up the plant's ORGANS and these organs combine to make the ORGAN SYSTEM.
Explanation:
A positive human impact on the environment occurs when a person takes action to improve society, nature and its resources.<span> Acting positively, even in a small manner, has a major impact on the environment, especially when it is done consistently.
</span>Humans can effect<span> the </span>ecosystem<span> in a </span>negative<span> way ,by pollution, waste dumping</span><span>, over hunting of animals,over fishing,industrial gases,energy ...</span><span>
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Answer I think male and 23 chromosomes