1. a). Describe what makes a plant grow towards light? Ans:​

The plants lean because of a phenomenon called differential growth, where the cells on the “dim” side of the stem grow faster than the cells on the “bright” side. The result is that the plant bends toward the light source

Explanation:

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.