On a summer day at the equator on mars the temperature never rises higher than 50

TRUE

Explanation:

At the equatorial region of Mars, the temperature on a summer day, usually rises up to an average of about 20°C during the day-time and up to -70°C during the night time.

This large temperature fluctuation of Mars is due to the presence of a thin atmosphere that is relatively much thinner than the atmosphere of earth. The atmosphere of Mars is primarily comprised of Carbon dioxide (CO₂) and there is high moisture content in the atmosphere, which could allow life to be habitable.

Thus, the above given statement is true.

the answer is b, have negligible mass

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2