It is believed that solar nebular materials came from which of the following?
a. material from previous stars
b. the sun
c. terrestrial planets
d. solar winds

The seaport that is near caracas has which type of climate?

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a. the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?