Answer:
C
Explanation:
Though the wildlife is based on the weather (you wouldn't see a polar bear in the rainforest), the weather is not based on the wildlife. If you put a polar bear in the rainforest, it won't make it a tundra. The ages of the plants are also completely irrelevant.
Nucleus. The answer is this because:
The nucleus is the central and most important part of a cell and so it directs the cell activities.
Explanation:
Astronomers have a huge problem detecting radiation from space because the Earth's atmosphere blocks most of it and stops it from reaching the surface. Visible light and radio waves get through to telescopes on the ground, and some detectors (infrared, UV and gamma) work when they are high up on mountains.
hope this helped!!!
The diaphragm is the most important muscle when controlling breathing.
The diaphragm contracts when you inhale to increase the space into which your lungs expand.
