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We basically have the answer in the text provided with the question. It says that termites benefit from the flagellates living in them and so do the flagellates.
When both individuals benefit from a symbiotic relationship, this is called mutualism "mutual benefit".
A.
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If fishing of a secondary species increases, the tertiary species that used to feed on the secondary ones will have less food, therefore, less energy. Another consequence is that secondary species fed on primary species, therefore, there will be less predation of primary species which will increase their population.
B, C.
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"prey-predator" will be a hunting/feeding situation. Therefore, "a stock eating a fish with its beak".
"parasitism" will be a symbiotic relationship where only the parasite benefits and harms the host. Therefore, "ticks sucking the blood of the body on an animal".
"commensalism" will be a symbiotic relationship where only only species benefits but the other isn't harmed in any way. Therefore, "barnacles on the back of a whale". To be more specific, you should call these whale barnacles, because there are tens of types of barnacles.
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1. Water condenses to form clouds.
2. Water falls as rain, snow and sleet.
3. Water flows down mountains and hills.
4. Water joins streams or forms groundwater.
Explanation:
For water to fall down as rain/snow/sleet, first we need the clouds, which form through evaporation.
After the water falls down it flows down mountains and hills.
The water that flows down mountains/hills can either join streams, or it can penetrate the soil forming groundwater.
Hope it helped,
BioTeacher101
