Please help me part 2 12. which two biomes have moderate precipitation levels?
a.desert and tundra
b.tropical rain forest and taiga
c.savanna and grassland
d.grassland and desert 13. which marine ecosystem contains the fewest producers?
a.intertidal zone
b.near shore zone
c.coral reef
d.open ocean 14.which of the following describes why wetlands are important to the water cycle?
a.dense vegetation helps filter out pollutants in the water.
b.open meadows help to filtr out pollutants in the water.
c. dense vegetation allows for biological magnification in the water.
d. open meadows allow for biological magnification in the water. 15. which of the following do scientists think is responsible for climate change?
a.nitrogen
b.smog
c.acid rain
d.carbon dioxide 16. the goals of biodiversity conservation include all of the followin except
a.protecting individual species.
b.introducing exotic species into new environments.
c.preserving habitats and ecosystems.
d.making sure local people benefit from conservation efforts. 17. humans can cause an ecosystem to collapse by
a.collecting and chemically altering industrial waste to detoxify it.
b.reducing habitat fradmentation.
c.hunting a keystone species to extiction.
d.building shelter belts next to farm fields. 18. explain how clearing forests by cuttin and burning trees contributes to climate change.
a.weather patterns change as a result of changes in forest patterns, which lead to climate change.
b.reducing the number of trees reduces the amount of shade, which leads to higher local temperatures.
c.clearing forests leads to large areas of bare ground that asorb more light energy from the sun than forested areas.
d.burning trees releases huge amounts of carbon dioxide, which is a green house gas.