When several of the same species live and interact with other species in an ecosystem it is called a?

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

Do plant cells perform cellular respiration?

1. isogamy 1 organisms with gametes of the same size and shape 2. anisogamy organisms with gametes of different sizes and shapes 3. oogamy 2 organisms with gametes of the same shape but different sizes 4. gonads gamete-producing organs in lower plants 5. gametangia gamete-producing organs in animals