Chapter 3 Vocab Flashcards Preview

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Flashcards in Chapter 3 Vocab Deck (24):
1

Ecology

The study of organisms in the biosphere and and how the interact with each other, their surroundings, and their environment.

2

Autotrophs

Organism that is able to capture energy from sunlight or chemicals and use it to produce its own inorganic compounds. Also called a producer.

3

Photosynthesis

“captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches. This process adds oxygen to the atmosphere and removes carbon dioxide.”

4

Chemosynthesis

Chemical energy is used to carry out carbohydrates.

5

Heterotrophs or consumer

Acquire energy from the environment and other organisms

6

Carnivores

Kill and eat other animals

7

Herbivores

Eat plants, seeds,fruits,ect.

8

Scavengers

Consume carcasses of other animals

9

Omnivores

Includes a diet of both plants and animals.

10

Decomposers

Feed by chemically breaking down organic matter

11

Detirivores

Feed on detritvous particles

12

Food chain

Series of steps in which organisms transfer energy by eating and being eaten

13

Phytoplankton

Photosynthesic algae near the surface of the ocean

14

Food web

Network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem

15

Ecological pyramids

Illustration of the relative amounts of energy and matter contained within each trophic level in a given food chain or web

16

biogeochemical cycles

Process in which elements, chemical compounds, and other forms of matter are passed from one organism to the other and one biosphere to the other

17

Nutrients

Chemical substance an organism needs to stay alive

18

Nitrogen fixation

Process of converting nitrogen gas into nitrogen compounds that plants can absorb and use

19

Denitrification

Process by which bacteria convert nitrates into nitrogen gas

20

Biological process

Activities preformed by living organisms

21

Geological

Geological changes in the Earth

22

Physical/chemical

Ex. Lightening, clouds

23

Human

Human actions that affect cycles on a global school

24

Biosphere

All life on earth and all part of earth in which life exists.