Give Scientific reasons.
1. Plants in an ecosystem are called producers.
2. The flow of energy in an ecosystem is unidirectional.
3. The flow of nutrients in an ecosystem is cyclic.
4. Decomposers are crucial biotic factors in any ecosystem.
Give scientific reasons:
1. Roots of plants grow away from light.
2. Hormones secreted by the endocrine glands are present everywhere in the body.
3. Insulin plays an important role in controlling the sugar level of blood.