Because the rock is laid down over time, the oldest rock (and fossils or whatever) will be in the lowest layer. As you go up, the age decreases - you are looking at younger rocks.
This doesn't tell you the *absolute* age of the rocks - you can't say from this evidence whether they are 100 million or 500 million years old. But you can see changes over history and you can get an ordering in time.
Answer:
A because intraspecific means alone
Explanation:
Most of the nitrogen<span> that plants and animals </span>use<span> is made by bacteria. Bacteria in the soil </span>can<span> change </span>nitrogen<span> in the atmosphere (N</span>2) into ammonia (NH3<span>), a form that plants </span>can use<span>. ... When plants, animals, and other </span>organisms<span> die, decomposers return </span>nitrogen<span> to the soil.
hope it helps......</span>
Endocytosis -into cell
exocytosis -out of cell
so they are different.
Answer:
Through this process of natural selection, favorable traits are transmitted through generations. Natural selection can lead to specistion, where one species gives rise to a new and distincly different species.
