Chasing the night away

why does yolanda have trouble sleeping

a a movie scared her

b she is hungry and wants to eat

c her dog will not stop barking

d the moon is shining in her eyes

then that particular organisms become extinct.

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.

if you know your abc's you should be able to get your answer or just use google