Which is a biotic factor that affects the size of a population in a specific ecosystem?
a. average temperature of the ecosystem
b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

The word belongs in a different group than all of the other words in the list.