<span>The answer is d. front. A front is the narrow region between two air masses of different densities. The interaction of the air masses cause the mass that is less dense to rise. Once air rises it cools and condenses to form clouds and eventually leads to precipitation. Using cold fronts as an example, the denser mass of cold air forces the lighter warm air to rise. </span>
The answer is constant death rate because then there would be less than more
Some minerals can form from the air combining with substances, they can form from igneous rock, and sometimes minerals can re crystalize from metamorphic rock
Answer:
Land plants evolved from a group of green algae, perhaps as early as 850mya
I think it is
<span>D. It takes place along an unraveled section of DNA</span>
