Which of the following does not act as a greenhouse gas and why? * A) Methane because the chemical bonds are stable and allow energy to pass through the
molecule with very little molecular movement and reradiation
B) Methane because its structure allows for high movement and energy to be reradiated
back to Earth
C) Oxygen gas because the chemical bonds are stable and allow energy to pass through
the molecule with very little molecular movement and reradiation
D) Oxygen gas because its structure allows for high movement and energy to be
reradiated back to Earth

What is histamine and what is its role in allergic reactions

What can happen to an enzyme as tempature rises

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.