The statement 2 + 2 = 4 would be considered a in the science world.

hypothesis

What do animals wth echolocation have in common other than echolocation

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.

Which chemical equation is unbalanced? which chemical equation is unbalanced