What does a seed contain?

embryo and nutrients

nutrients and vascular tissue

vascular tissue and pollen

pollen and nutrients

Which of the following best illustrates natural selection? A) An organism with favorable genetic variations will tend to survive and breed successfully B) A population monopolizes all of the resources in its habitat, forcing the other species to

Which best compares animal behavior and social behavior?

The basic unit which makes DNA is called

What other name can autotrophs be called?

During the signal transduction process, the signal often triggers a signal transduction cascade. For example, a single activated protein A molecule activates hundreds of protein B molecules, and so on, until a cellular response occurs.

as the flames heat the gasses in the hot air ballon, the volume of the gasses increases. At constant pressure, the volume of all gasses increase with temperature. Is this statement a scientific theory or law? Explain

What is a biological entity?

Toxic waste can enter foods through the contamination of groundwater. True or False?

An organism that is heterozygous for a particular character will generally show the recessive trait. a. true b. false

Some speciea undergo long peiods of stability interrupted by geologically brief periods of signifficant change. During these brief periods, new species may evolve. This pattern of evolution is part of the concept of