What is the type of nitrogen that plants and animals cannot use without it being converted to a different form?

What energy transformation occurs when a car stereo on

What name is given to the process by which an organisim develops from a single cell into many kinds of cells?

The earths energy budget A. describes the quantities of natural resources available B. describes the balance of energy that arrives at and then leaves earth C. describes how much money is spent on energy D.

Large scale evolutionary trends are the results of

What does this activity tell you about the relationship between these six organisms? Bird bat lizard frog cat whale

What part of the male urogenital tract is shared by the urinary and reproductive systems? the prostate gland the seminal vesicles the vas deferens the urethra

What is The relationship between the various levels of organization in plants and animals

What type of mountain ranges form at convergent plate boundaries

What is the actual temperature 3000km below the surface of the Earth?

In science the term theory is best described as: A) an untested guess B) an explanation based on scientific evidence C) a hunch D) speculation