Air thermals are updrafts of warm air that rise from the ground into the sky. By flying in a spiral pattern
birds are able to ride these air currents to higher
altitudes.

What process enables birds to fly to higher altitudes without flapping their wings,
while riding these air thermals?

A. convection because warm air sinks and cool air rises.

B. convection because warm air rises and cool air sinks.

C. conduction because warm air sinks and cool air rises.

D. conduction because warm air rises and cool air sinks

B. convection because warm air rises and cool air sinks.

Explanation:

The processes that enables birds to fly to higher altitudes without flapping their winds while riding air thermals is called convection.

Convection is one of the forms of heat transfer usually found in gases and liquids.

the answer is   c.) 1575 j.

explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.