land cover change

Question 1

natural land cover change

Answer 1

climate change - orbit of planet around the sun

Question 2

glacial maximum

Answer 2

-drier + cooler conditions
-average global surface temps are low
snow and ice accumulate, producing massive ice sheets

Question 3

inter-glacial periods

Answer 3

-warmer + wetter
-ice sheets melt
-forest + grassland expand

Question 4

geo-physical changes

Answer 4

-changes to the physical structure of the land
-volcanoes, earthquakes, land slides
-tectonic plate movement
-volcanoes:
short term - wipes out vegetation with lava

long term - creates good soil + vegetation

Question 5

plant succession

Answer 5

-plants need water, nutrients, light, space
pioneer - secondary - tertiary

Question 6

plant secondary succession

Answer 6

event (fire) - grasses and perennials - shrubs + soft soils - hardwoods

-fire makes soil better
-ash makes good soil beds
-brings introduced species that develop faster
-weeds - suck nutrients

Question 7

plant primary succession

Answer 7

bare rock - lichens - small annuals - grasses + perennials - shrubs + soft woods - hardwoods

Question 8

fires and pests
biotic

Answer 8

pests - bugs, beetles, locusts - eat crops

disease - fungal rust

Question 9

abiotic

Answer 9

hazards + disasters

-wildfires
-spinny sinds - cyclone, typhoon, hurricane
-drought
-floods