A student wants to determine whether a certain variable affects the rate at which crickets chirp. She counts the number of times different groups of crickets chirp per
minute. She records her data in the table below.

Number of crickets
Amount of food
Size of enclosure
Temperature

Which two groups of crickets can the students use as part of a good experimental
design?

it would lead to upper respiratory infections and pneumonia.

the actual answer was 160934

the endomembrane system i think

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.