Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science part 1 of 2
science unit 6
| Question | Answer |
|---|---|
| why do plants play an important role in succession? | because they provide food and shelter for animals |
| What are the first organisms to colonize? | Lichens-they form because of the interactions of alga+fungus |
| What do lichens do? | lichens use photosynthesis to make and to grow and they produce acids. these acids break rock into soil |
| what happens at each generation of plants? | more soil is created allowing other plants to grow even taller and allowing more shrubs to grow |
| what does the succession process look like? | lichens (0-1) grass (2-4) shrubs (5-20) forest (25-100) years |
| what are natural disturbances? | forest fires and strong winds |
| what are human made disturbances? | cutting down forests fro agriculture and urban development |
| what is a result of less complex food webs? | planting one type of tree |
| what are some ways humans use land? | farming, building cities, mining and travelling |
| what are some ways of habitat loss? | forest clear-out, wetlands are drained and meadows are paved over |
| what are our standard of living in Canada compared to other places | very high < larger ecological footprint |
| what does earth biodiversity provide us with? | things we need to live and enjoy life (plant- raw materials) |
| how many living things are there? and what are they mostly? | 1.75 million species (identified) most are small organisms or invertebrates |
| why do invasive species have a negative impact? | not a part of existing food chains, grow quickly, have no or few natural predators and they compete for the same natural resources |
Created by:
cog
Popular Biology sets