What are two features of coral reefs?
A. prevent shore erosion and live symbiotically with algae
B. cause shore erosiding and act as a parasite to algae
C. exist in benthic zone and kill off other sea life
D. exist in abyssal zone and lack polyps

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

All other things being equal the size of a population will decrease if