An element's atomic number is 49. How many electrons would an atom of this element have?

When you start to exercise, the body responds in various ways due to internal stimuli. One response is an increase in heart rate. Identify a stimulus that would cause an increase in heart rate.

What are some abiotic characteristics of a rainforest biome

Linnaean classification involves a. only large, general categories of organisms. b. only small, specific categories of organisms. c. both large and small categories of organisms. d. no categories of organisms.

How can the environment be organized into levels from simple to complex?

What does adaptive radiation cause? A. Higher extinction rates B. Higher gene flow C. Higher biodiversity D. Higher genetic drift

Australopithecines were the ancestors of monkeys. A. True B. False

A mutation that causes a human have 11 toes is (neutral, harmful, or beneficial.)

Cells of a fungus and an animal

Is cytoplasm prokaryotic or eukaryotic

Professor Jones surveyed her six classes and found that students who slept less than 5 hours the night before an exam received lower exam scores than those students who slept 7 hours or more.