You are growing a Chrysanthemum plant in an artificial growth chamber in a florist shop. You want to induce the plant to flower, so since this is a "fall" plant, you grow it in 1. . By accident, a night-watchman checking the facility turns a flash-light on in the growth chamber in the middle of the night. This short pulse of white light activates 2. , which interrupts the 3. that controls flowering, and thus the plant 4. .

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

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.