ecosystems/sustainable ecosystems

Question 1

aboitic

Answer 1

nonliving things

Question 2

biotic

Answer 2

living things

Question 3

bioaccumulation

Answer 3

a process of accumulation of chemicals in an organism that takes place if the rate of intake exceeds the rate of excretion.

Question 4

lithsphere

Answer 4

the hard rocky parts of the earth

Question 5

hydrosphere

Answer 5

the lakes and water parts of the earth

Question 6

atmosphere

Answer 6

the parts on earth with living organisms

Question 7

are bears herbivores

Answer 7

no, there omnivores

Question 8

water cycle

Answer 8

Evaporation

Question 9

Carbon cycle

Answer 9

Air contains carbon in the form of carbon dioxide gas plant and algae use carbon dioxide to make sugars which are energy rich carbon containing compounds organisms break dow the sugar made by plants and algae to obtain energy for life carbon dioxide is released as waste Burning fossil fuels and wood releases carbon dioxide into the atmosphere organisms die carbon containing molecules goes into the soil and These molecules are broken down by fungi,bacteria and other decomposers. During this decay process carbon dioxide is released into the air under certain conditions the remains of some dead organisms may gradually be changed into fossil fuels,such as coal,gas ,and oil these carbon compounds are rich and energy