The is a reoccurring set of behavioral and physical changes from one period of estrus to the next estrus which occurs in mammalian females. Polyestrus Estrous cycle Continuous estrus Monoestrous cycle

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.

b. climate change will cause an increase in biodiversity of all ecosystems.

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