Answer:
<h2>C. To date rock layers</h2>
Explanation:
<em>They can help determine the relative age of rock layers</em>.
It is the metric unit of measurement for temperature.
Answer:
True
Explanation:
Since it's a passive way of transport, it is in favor of the concentration gradient and does not need to use ATP.
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
