A from the sun hits chlorophyll and excites an electron, known as .

Photon, light dependent reaction of photosynthesis

Explanation:

Photosynthesis is the process by which green plants make their own food in the presence of sunlight and water.

There are two steps of Photosynthesis that include light dependent reaction and light-independent reaction.

In light dependent reaction, a photon from the sun is absorbed by the green pigment in leaves called chlorophyll that allow the electron to excite from ground energy level to high energy level. It converts the solar energy into chemical energy and called light dependent reaction of photosynthesis.

Hence, the correct answer is "Photon, light dependent reaction of photosynthesis".

the answer is b: 1.4 km/hr

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.