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Flashcards in September 21 Deck (23):
1

What is the second law of thermodynamics?

Energy is always lost to hear in a transfer
Quality is always less

2

More energy transfers = _______ energy lost

More

3

Hydro power emits ______ gas

Methane

4

Nuclear power produces ______ of energy but the waste is _______

Lots, non disposable

5

Name three flow resources.

Solar
Wind
Tidal

6

True or false
Green house gases disrupt earths equilibrium of solar radiation

True, we keep to much in the atmosphere

7

What are autotrophs?

The bottom of the food chain that product their own nutrition. Producers.

8

What is a heterotroph?

Something that consumes something else for nutrition.

9

The higher up the food chain you go the _____ energy is available

Less

10

What are the two types of autotrophs?

Phototroph
Chemotroph

11

What is the euphotic zone?

The top layer of the ocean that receives light and has lots of oxygen emitted by phytoplankton

12

Oceans hold 50% _____ carbon dioxide than the atmosphere

Less

13

What is a biotic pyramid?

It shows a food chain but it shows how much energy is lost per level.

14

True or false
Biotic pyramids reflect the first law of thermodynamics.

False, they reflect the second law of thermodynamics, that energy is lost to heat in transfer

15

What is an umbrella species?

A species that can be looked at to reflect an entire food chain
A good indicator species.

16

To sustain more people we should eat _____ on the food chain because there is _______ energy there.

Lower, more

17

What is a keystone species?

A species that is critical to a food web, a good umbrella species and indicator species.

18

What is a focal species?

The species most commonly observed

19

A decadent ecosystem means it is a __________ ecosystem

Self sustaining

20

Identify the variables:

NPP - R = GPP

NPP = net primary productivity
R = autotrophic respiration
GPP = gross primary productivity

21

What does gross primary productivity refer to in terms of biological ecosystems.

The rate of solar energy to biomass

22

What does autotrophic respiration refer to?

The cost of an organism.

23

what is the first law of thermodynamics

Energy cannot be created or destroyed.
Quantity is constant