Before an ozone layer formed to reduce radiation, life existed

a. in the air.

c. in oceans and underground.

b. in trees and plants.

d. on land.

What is your basal metabolism

Two liquid samples are poured into a beaker. As shown, the liquids don't mix with each other but form layers instead. Which of these statements about the two liquids is correct? A. they have the same mass B. they have the same density C.

What is the resultant of a and b if a = 3i 3j and b = 3i - 3j?

Training only a few muscle groups leads to imbalances and an increased risk of injury.

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. A conductor is placed in an external electrostatic field.

Work is a product of A force and distance B force and heat energy C cause and heat energy D cause and effect

An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the maximum pressure on the submarine hull?

Why cooking pans don't have have metal handles?

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band

How would you explain photosynthesis to a new student in class