Why is there so much oxygen in living things?

How do rocks along the central valley of the mid-ocean ridge provide evidence of sea-floor spreading

How have humans changed the atmosphere of the planet in the past 200 years? A. They have increased the levels of greenhouse gases. B. They have reduced the levels of greenhouse gases. C. They have increased the levels of nitrogen. D.

Mushrooms and shelf fungi are classidied as

Explain how the special properties of water make it essential for life on Earth.

Classify a pet dog as an autotrophs or heterotroph and as an herbivore, carnivores or omnivores explain

Sunglasses are just as protective as safety glasses? A. False B. True

Biologist want to measure and keep track of ph because if ph changes the structure of biological molecules and so their function could lost t True or false

Which statement about homeostasis is false? Homeostasis depends primarily on positive feedback. Homeostasis is necessary for proper functioning of the body. Homeostasis is the maintenance of a steady physiological state within an organism or cell.

The theory of evolution is most accurately described as Question 23 options: a. an educated guess about how species originate. b. one possible explanation, among several scientific alternatives, about how species have come into existence. c.

What are the symbols for the elements that make up lipids