Environment & Evolution

Question 1

Food chain

Answer 1

There is 90% loss as energy moves up the food chain.

Most energy at base. Least at top.

100% plants. Primary consumer 10%. Secondary consumer 1%. Only 1/10 makes it to next level. 300* 1/10= 30. Etc. multiply tarting level by 1/10 or 0.10 to get next level.

Question 2

Carbon cycle

Answer 2

Cell respiration is the reverse of photosynthesis.

Photosynthesis.
Carbon dioxide + water and sunlight
Stores energy & Creates
Glucose + oxygen

Cellular respiration.
Glucose and oxygen
Releases energy & creates
Carbon dioxide and water.

Question 3

Nitrogen cycle

Answer 3

Nitrogen fixing bacteria changes nitrogen gas from atmosphere into useable nitrogen in the soil.

Question 4

Water cycle

Answer 4

Precipitation
Evaporation (transpiration)
Condensation

Question 5

Hominid evolution trends

Answer 5

Larger bodies
Smaller teeth
More upright
Larger brains