Convention is when warm air rises and takes heat with it; eventually it cools and sinks

radiation is when sunlight travels through space without the aid of fluids or solids
a. true

b. false

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?