Question

1. what are fronts in weather?

a. boundaries between two different air masses
b. areas of high humidity
c. the highest point in the atmosphere
d. the hottest part of the day

1. what is the atmosphere?

a. the layer of gases that surrounds earth
b. the solid ground beneath our feet
c. the layer of water covering the earths surface
d. the area between the earth and the moon

Explanation:

For question 1: A weather front is defined as the boundary between two different air masses. Option b refers to humidity - related areas (not fronts), option c is about the highest atmospheric point (not relevant to fronts), and option d is about daily temperature (not fronts).
For question 2: The atmosphere is the layer of gases surrounding Earth. Option b is the lithosphere (solid ground), option c is the hydrosphere (water layer), and option d is the space between Earth and Moon (not the atmosphere).

Answer:

1. A. Boundaries between two different air masses
2. A. The layer of gases that surrounds Earth