The Biosphere

4. the surroundings or conditions in which a person, animal, or plant lives
5. the variety of species on earth or in any one environment on earth
7. give birth to young, are warm-blooded, have hair, and can produce milk
8. the earth system that is composed all the living things on earth
9. a large region on earth with a specific climate that contains certain species
10. the branch of science concerned with classification, especially of organisms
12. of protozoans, certain algae, spores, etc. consisting of a single cell
13. distribution
14. group of diverse species and their nonliving environment including water, soil, and air
17. animals with a backbone and/or spinal cord
18. contain mostly grasses and few trees

1. organisms with cells that have a nucleus
2. a cold, dry climate where few plants can survive
3. a group of organisms of the same type that are capable of reproducing together
6. act in such a way as to have an effect on another
9. life
11. (of an organism or part) having or consisting of many cells
14. when a species no longer exists on earth
15. an individual animal, plant, or single-celled life form
16. arrangement