Most matter in the natural world is a mixture of substances. consider seawater, dirt, and plants. explain why each of these examples of matter is a mixture.

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Defend or refute the argument that the government has too large a presence in the agriculture industry.

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.