The chart above shows the lowest pH level at which four different types of organisms can survive. These organisms live in Lake Bluewater. Lake Bluewater typically has a pH of 7.2. Acid rain has caused the pH level of this lake to drop significantly within the past few months. Which organisms will most likely die if the pH level of Lake Bluewater decreases to 5.5?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

What is a dendrite and what does it do?

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.