The earth's differentiation and size were significant factors for life on Earth because Earth's composition and gravitational attraction a.. keep the moon and sun in orbit
b. keep people grounded
c.. helped to create and retain Earth's atmosphere
d. create and retain internal heat

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent