Lecture 4 - Energy Life Matter

Question 1

Matter

Answer 1

Physical Substance in general that occupies space and possess mass
-All physical states

1. Atom
2. Elements (same atom)
3. Molecules (elements and atoms interacting)
4. Compounds (many molecules)

-almost all organisms made of 6 elements
*carbon, oxygen, sulfur, phosphorus, nitrogen, hydrogen

Question 2

Photosynthetically Active Radiation

Answer 2

Plants can only use solar radiation in the visible spectrum
-400-700 nanometers

Question 3

Ecological Pyramids

Answer 3

Consumers:
Organisms make “living” in terms of energy acquisition

Trophic Level:
1. Producers (plants)
2. Consumers (animals)
- Primary
-Secondary
-Tertiary

10% Rule of thumb:
-Other sources of energy
*heat, poop, body weight

Question 4

Biogeochemical Cycles

Answer 4

All elements cycle through environment
-Reservoirs