In order to determine which antibiotic might treat an infection most effectively, a plate is inoculated with a pathogen. A variety of paper disks, each containing a known amount of antibiotic, are placed on the surface of the plate. After incubation, the plates are examined for zones of inhibition. Which type of test is this

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Greenthe fossil record is the history of life recorded byhuman observationgod. climatologists. remains of the past.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.