Which of the following statements about a compound is true? a. only the chemical properties of a compound are usually the same as those of the elements from which it is formed. b. the physical and chemical properties of a compound are usually the same as those of the elements from which it is formed. c. only the physical properties of a compound are usually the same as those of the elements from which it is formed. d. the physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples

These are groups of reproducing populations that are insulated from other groups