**worth 20 points ** some studies has shown that peppermint odor increases people’s mental sharpness, especially when they solve math problems. which best describes how this could be a valid scientific claim? a. if it is tested in a controlled setting with repeated results b. if the test is published on wikipedia c. if the scientist was previously peer reviewed d. if the math problems are easy problems

If the kidney cell of a bird has 64 chromosomes how many chromosones does the sperm of this bird have

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons