| A | B |
|---|
| Mitochondria supplies _____ for the cell. | energy |
| Photosynthesis occurs in cells that have _____. | chloroplasts |
| Sunlight, water, and _____ are needed to perform photosynthesis. | carbon dioxide |
| What is a type of air pollution that can form over urban and indutrial areas? | smog |
| Toxic waste is a collection of what type of materials? | poisonous |
| The US has _____ to help protect the environment. | laws |
| What is the final stage of succession in a community called? | climax |
| A good example of _____ succession is a forest fire. | secondary |
| Reproduction involves the transfer of genetic material from parent to _____. | offspring |
| Which behavior described below is an instinctive behavior? | a spider spinning a web |
| Before splitting, a protist first makes a copy of its own _____ material. | genetic |
| An _____ is a way of acting or behaving that we are aborn with and do not need to learn. | instinct |
| _____ information is passed from parents to offspring. | genetic |
| Which of these is an inherited trait? | hair color |
| Internal or external adjustments are _____ adaptations of structures. | physical |
| A thick layer of body fat or heavy fur helps _____ an animal. | insulate |
| _____ allows both predators and prey to move about unnoticed. | camouflage |
| Remains of living things in Earth's crust are _____. | fossils |
| Variations of organisms help other organisms _____ and reproduce. | survive |
| Identifying fossils in _____ layers enables us to estimate when the layers were formed. | rock |
