If over time, a population has a larger birth rate than death rate, what is happening to the size of that population? - Staying the same over time
- Decreasing in size
- Decreasing first and then growing
- Growing in size​

so whats the answer

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.