The image shows barrels containing toxic waste that were dumped into a body of water. what is the likely effect of the dumping on this ecosystem?   a. the biodiversity of the ecosystem will decrease because the dumped chemicals polluted the ecosystem. b.the biodiversity of the ecosystem will increase because of the chemicals present in the ecosystem. c. the biodiversity of the ecosystem won’t be affected by the pollution in the ecosystem. d. the biodiversity of the ecosystem will initially increase and then will decrease after some time.

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.

The big bang theory suggest that the universe is about - 300 million years old - 4.6 billion years old - 30 billion years old - 13 billion years old