Answer:
C. Air Pollution because light is needed to do photosynthesis as well as carbon dioxide. Temperature is also affecting the rate of photosynthesis (temperature too high the enzymes are denatured) so the answer would be C.
When the plant change its direction towards sunlight
5: the parasite and the host need each other
Answer: If you are 80 years and older, it should be less than 150/90 (“150 over 90”). In general, the lower your blood pressure, the better. A blood pressure reading of less than 90/60 is normal as long as you feel okay.
D should be the answer as they are no longer able to perform sexual reproduction without the other fish. Therefore, they would die off because they have lost the partner needed to reproduce.
Hope this helps!