Answer:
The water is needed for drinking and farming.
The warm climate near water makes life comfortable.
The rich soil near waterways makes for better crops.
The waterways make trade and transportation easier.
The fish in waterways attract other animals to be hunted.
The Bold ones are the answers.
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(b).
Algae goes through photosynthesis which requires water,carbon dioxide,sunlight and chlorophyll to produce food(glucose)
Answer:
Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.
Explanation:
Mutualism- Both organisms benefit from each other, for example bees and flowers, Bees help pollinate and the flowers give the bees nectar needed to make honey.
Commensalism- one organism benefits and the other stays neutral. For example, a bird and a tree, The tree gives the bird a home and the tree stays unaffected
Parasitism- One organism benefits and the other does not. For example, dogs and fleas, the fleas get to eat and the dogs get to suffer from the bites/ they can get sick.
Calcium and phosphorus (as phosphate)