Answer:
A. Yes, because molecules move down the
concentration gradient without using energy.
Explanation:
Active transport is the energy-requiring process of pumping molecules and ions across membranes against a concentration gradient. Both endocytosis and exocytosis are active transport processes.
Hope that helps!
<span>The virus uses the cell to replicate itself and then moves on. The cell, after replication dies as the new virus spreads.
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Answer:
In the entire solar system, the environment of planet earth is unique due to the presence of the atmosphere.
It is responsible for providing carbon dioxide and oxygen which are essential for the presence of life on earth.
Secondly, it helps in keeping the earth warm through the greenhouse effect.
It prevents the entry of harmful radiations of the sun into the atmosphere.
Your answer is <span>1.
0.8 grams/kilogram</span>
For an animal to be extinct none more of that specific species must exist on Earth. This makes it impossible for that species to come back to life.
