It's A. Temperature changes modify the enzyme shape, so they no longer fits.
The root tip allows the plant to grow deeper into the soil
A theory that states that only the organism with traits that are useful to the environment survive. For example, short-neck giraffes would’ve died out years ago as they can’t reach the trees nor eat grass on the ground.
<span>Sun Belt is the southern region of the United States, it includes Florida, Texas, Arizona, and California. P</span><span>eople moved south to avoid the freezing winters of the North. </span><span>
Movement into the "sun belt" is an example of the population movement - migration. </span>
