What must occur within a gene pool before the formation of a new species? a. geographic isolation b. niche formation c. reproductive isolation d. speciation

For each pair of terms explain how the meanings of the terms differ. 1. diffusion and osmosis 2. active transport and passive transport 3. endocytosis and exocytosis

18. There is a liquid capsule inside a cup full of liquid. The cup full of liquid has salt yn it and the liquid capsule has no salt in it. In which direction will the solvent flow? A From the capsule to the larger cup B.

Select the correct answer. What is the solution of the system x - 3y = - 13 and 5x + 7y = 34? A. X = (6) (5), y = 4 B. x = (7) (2), y = (9) (2) C. x = (1 (2), y = (9) (2) D. X=-3, y = 7

What is the correlation between the amount of available niches an ecosystem has and the amount of biodiversity it has?

Which best describes what geologists study? A. Earth's water and ice supplies O B. Plant and animal life on Earth and other planets C. The origin, physical history and structure of Earth D. Earth's atmosphere and weather

What is the relationship between genetic variation and natural selection?

Why has antibiotic resistance evolved in bacteria? A. All bacteria reproduce very quickly. B. Bacteria exposed to antibiotics developed a resistance to them. C.

What is anaerobic respiration? A. The process cells use to release energy from glucose when oxygen is not available B. Physical activity that increases heart and breathing rates C. Physical activity that decreases heart and breathing rates D.

Newborn human babies with lesser body weight are prone to infections. Heavier babies are difficult to deliver through the narrow pelvic passage of human mothers and may not survive.

This biomolecule provides long term storage of energy in heterotroph A.) Carbohydrate B.) Lipids C.) Proteins D.) Nucleic Acids