5. Scientists exposed plants to radioactive oxygen in different forms to observe how plants recycle oxygen during photosynthesis. Which conclusion would their observations support?
A. Carbon dioxide and water are recycled into glucose and oxygen gas.
B. Oxygen gas and water are recycled into glucose and carbon dioxide.
C. Glucose and water are recycled into carbon dioxide and oxygen gas.
D. Glucose and oxygen gas are recycled into carbon dioxide and water.
6. A river food chain works as follows: Algae —> insects —> salmon —> bears
The producers in the ecosystem produce 8,000,000 kilocalories of energy via photosynthesis. The bears need 100 kilocalories to survive. Can the ecosystem support the bears, and if so, how many?
A. No, 0 individuals.
B. Yes, 800 individuals.****
C. No, 0.8 individuals.
D. Yes, 80 individuals.
Please, help quick! I am 99.99999% sure 6 is 800/B. but I have no idea for 5.!!!!!
3 answers
2. Carbon Dioxide
3. Usable form of energy
4. Heat
5. Carbon Dioxide and water are recycled into glucose and oxygen gas.
6. 800 individuals (i think)
7. Living organisms decay, releasing carbon into the soil, and soil is compacted into rocks
8. Bacteria
9. Nitrogen fixation, nitrification, and denitrification
10. Energy flows in one direction, and matter cycles through the environment
11. Food webs are the best depictions of feeding relationships because they show many ways that plants and animals are connected
12. Essay
13. Essay
14. Essay
There ya go.