How do soaring birds utilize convection? a : they use the warm air to stay warm.
b : they use thermal updrafts to stay aloft.
c : they flap their wings to push against the warm air.
d : none of the choices is correct.
e : they glide on the wind.

Option B. They use thermal updrafts to stay aloft

Explanation:

The sunlight warms the surface of the earth during noon and morning time and when this warming of the Earth's surface is not evenly done or uniform then this gives rise to the thermals. These are the rising air columns and rises when the air nearest to the earth heats up.

This is how some birds like vultures make use of the thermal updrafts to maintain flight.

prolly a beacuse the momentuem the car has increases while going down hill