Water and carbon dioxide are waste products released as a direct result of
(1)asexual reproduction
(2)mechanical digestion
(3)natural selection
(4)cellular respiration

One group of reptiles, characterized by the fossil ark metal x

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis