ecology

Question 1

human impacts on ecosystms

Answer 1

humans can effect aquatic and terrestrial ecosystems differently

Question 2

human impacts on aquatic ecosystems

Answer 2

LIGHT: humans can block light with buildings and garbage
NUTRIENTS: runoff from environments brings too much nutrients (nitrogen) and can cause algal blooms
ACIDITY: C02 build up causes acid rain causing too much acidity in water, can cause fish to die
TEMP: heated water (waste) is released by by power plants or other industries and heats up water causing fish to die
SALINITY: winter salting causes too much salt in water

Question 3

human impacts on terrestrial ecosystems

Answer 3

LIGHT: removing trees takes away the shade that the organisms need and adding buildings makes it have less sun less plant growth
WATER: dams causes flooding in areas and lack of it in others
irrigation (too much watering) causes an area to be too wet
NUTRIENTS: farming causes animals to get nutrients through fertilizers that is good
can decrees nutrients by soil leaching
TEMP: global warming creates less suitable habitats for cold climate animals

Question 4

nitrogen cycle

Answer 4

the process of turning nitrogen gas (N02) into nitrates (N03)
using nitrogen fixation
to do nitrogen fixation you use nitrogen fixing bacteria
then goes through ammonification
creates amnion
aluminum- nitrification
creates a nitrate

Question 5

nitrifiaction

Answer 5

using nitrifying bacteria to create a nitrate (N03)