Oxygen was introduced into the atmosphere as a byproduct of a. respiration. c. dehydration. b. photosynthesis. d. osmosis.

Five functions of hypothalamus

Which statement about fossils could be used as evidence that evolution by natural selection has been in effect for millions of years?

The amount of matter that cycles through a food web A) stays constant. B) continually increases. C) continually decreases. D) changes unpredictably.

What are the four main components of darwin's theory?

Proteins that bind to cells and stimulate cell division are called

Cross a homozygous dominant individual for brown hair with an individual who is blond hair. remember the starting are the parental generation. What you are getting with results are the offspring (the F1 generation)

Identical twins look alike because their bodies contain identical

You can spread allergies to another person t/f

A volcanic eruption adds carbon dioxide to the air. This is an example of interactions between the 1) hydrosphere and geosphere 2) atmosphere and geosphere 3) geosphere and biosphere 4) hydrosphere and biosphere

A 16 year old highschool student presents in the ER with a fever, stiff neck, headache and nausea. You order a spinal tap to be performed. Gram staining of the CSF reveals Gram (-) rods under the microscope.