Many of the proteins produced by humans have identical or nearly identical counterparts in chimpanzees. for example, the hemoglobin in your blood is about 99% similar to chimp hemoglobin. this suggests that humans and chimps share a common ancestor, from which both species evolved via

divergence

Explanation:

While humans and chimps remain very similar in some ways, the differences that exist between them have arisen over time due to different adaptations to differing conditions.(copied from USATESTPREP)

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.