|
|
|
2
|
a group of the same species living together
|
|
6
|
chemical substance that an organism needs to sustain life
|
|
11
|
process of converting nitrogen gas into nitrogen compounds that plants can absorb and use
|
|
12
|
process by which soil bacteria convert nitrates into nitrogen gas
|
|
14
|
how primary producers make energy without light
|
|
15
|
relies on others for energy
|
|
16
|
illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web
|
|
17
|
bottom of the food chain gets energy from the sun
|
|
19
|
a group of similar organisms that can breed and produce fertile offspring
|
|
21
|
single essential nutrient that limits productivity in an ecosystem
|
|
23
|
turns carbon dioxide light energy and water into oxygen and carbohydrates
|
|
24
|
total amount of living tissue within a given trophic level
|
|
25
|
floating plants particles in water
|
|
28
|
all places on earth with similar climates and species
|
|
29
|
multiple paths showing what eats what in an ecosystem
|
|
30
|
any place on or around the earth that contains life
|
|
31
|
all the organisms that live in a place, together with their nonliving environment
|
|
32
|
meat eater
|
|
|
