a random event kills off most the elephants in one area of africa the elephants left all happen to have shorter tails what mechanism is operating to change the genes in this population

Which of the following is not a symptom of desertification?

Are proteins, lipids, starch, sugar, calcium (ion), iron (ion), and chlorine (ion) found in blood plasma? If they are explain its function in the body.

Soil erosion is the elimination of soil by wind and animals minerals and water wind and water human and water

One cereal bag has mad of 37 g. What is the mass of 6 cereal bars? Is that more that's or less 1kg?

If you stretched out all the DNA from a single cell, how long would it be?

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