What is the energy needed to get a reaction started?

Why do autotrophs always occupy the lowest level of ecological pyramids?

Let's suppose a sheep that provided the oocyte for reproductive cloning was homozygous for a gene that causes a small head. This gene follows a maternal effect pattern of inheritance.

How do you following accurately pairs a type of receptor to the stimuli in which a responds?

Some students are comparing the parts of a cell to the parts of the body. Which part best represents the cell membrane and why?

How does matter move through the biosphere and how does energy move through the biosphere

How are the words balance and homeostasis connected?

The members of these kindoms all have cell walls. Which kingdoms are they?

Which description best contrasts adipose and muscle tissue? A.) Adipose tissue makes up bone and cartilage, while muscle tissue covers muscles. B.) Adipose tissue links bones to ligaments, while muscle tissue links bones to muscles. C.

Look at the food chain illustrated here. Frogs react very quickly to changes in their habitat. What would happen to the food chain if the frogs began to die off? A) The number of insects and grasses will get larger.

The development of the horse in the fossil record shows