An ecosystem is a(n) system in terms of energy, and a(n) system in terms of matter.

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

The sea slug that considered to be a photosyntheesizing animal