Jacob is unsure about how to focus a slide under the microscope. What would be Jacob’s best course of action? Ask the teacher for instructions. Ask his lab partner for instructions. Watch another student, and copy what he or she does. Use the trial-and-error method until the slide focuses.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Which entry is in the wrong position in the table?