1 universe 2 stars 3 solar 3 planets
<span>Prokaryotic organisms lack membrane bound nuclei as well as organelles.
</span>
Examples
-bacteria
-algae
The answer is rain percolates through the pavement into the ground below, causing cracks in the pavemen
Answer:
1. D- Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage.
2. B- Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random.
3. A- An interferon activates the body's immune system response to a virus.
4. D- Each persons immune system employs different tactics to get rid of the virus.
5. D- yes, because mutated viruses are able to infect more hosts.
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