Which of the following is a nonrenewable energy source? a: nuclear energy b: wind energy c: hydroelectric power d: solar energy

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.

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

Isotopes of the same element have differ in their