Burning fossil fuels releases CO2 into the atmosphere. What potential threat can it cause to earth

Which of the following is true regarding fermentation? Group of answer choices The end product pyruvate proceeds into the Krebs cycle At the end of fermentation NADH is converted back into NAD + Fermentation occurs in the cell membrane of organisms

Which of the following represents a difference between eccrine sweat glands and apocrine sweat glands? a. Eccrine sweat glands begin to function at puberty, while apocrine sweat glands function throughout life. b.

In our circulatory system, blood transports blood cells and dissolved ions when it moves through the body. Which of the following terms is suitable for blood?

Which of the following is an example of a predator adaptation? a. a porcupine's needles b. a shark's powerful jaws c. a frog's bright colors d. a plant's poisonous chemicals

Which theory sounds like an explanation that lamarck might give?

Which two processes result in variations in sexually reproducing species? (1) mutation and genetic recombination (2) mitosis and natural selection (3) extinction and gene replacement (4) selective breeding and cloning

How was the amount of food caught by a heron related to change in biotic and abiotic factors?

Which ecosystem demonstrates the lesser biodiversity? Why?

A particular tissue was discovered to have cells that lie in small chambers, separated by a matrix that is solid yet flexible, and fibers that could be stretched while still being able to return to their original length. Name this tissue.

What does the lac operon in bacteria code for?