Answer: D. It increases the bird's chances of finding a mate.
Explanation:
As the question states, it's beautiful for the mate to see.
Pesticide use can be very harmful beacause too much of them can cause the crops to go bad, and kill bees which help spread pollen and enhance the crops.
Human activities that increase the greenhouse effect are burning of fossil fuels and reducing the amount of trees on our planet increase the gases of the greenhouse affect. also cows release the gas methane when they fert which is a greenhouse gas.
Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
The name of the biggest part of the human brain is CEREBRUM.........
