ariel drew a diagram to compare two human-induced
environmental changes.
which label belongs in the area marked y

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 you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?