What is soil? A
a mixture of rock and mineral particles

B
a mixture of decayed organic materials

C
all of the above

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.

How does an angiosperm prevent self pollination

Which food could be transported in a galvanized metal container?