Which of the following explains why a scientist would want to identify this spider? check all that apply. 1. to be certain that it is a spider 2. to compare it to similar spiders 3. to be able to accurately describe the ecosystem 4. to be able to study how other organisms are affected by the species

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

How does science influence the decisions made about social, economic, and political issues?

The table below shows data for a population of fish in a pond. fish body color # of fins scales? tail shape a silver 4 yes fan b pink 4 yes flat c black 4 yes fan d orange 4 yes flat e orange 4 yes fan f silver 4 yes flat which of the above characteristics would be most in developing a classification system for the fish? a. body color and tail shape b. presence of scales and tail shape c. body color and number of fins d. number of fins and presence of scales