Ecosystems Year 9 Science Random Revision

sorry the punctuation is terrible and the topics are random

list an abiotic factor

weather (wind, temperature, sun, rain ect.), rocks, soil, salinity, PH or light intensity

a heterotroph is also known as…

consumers and decomposers

How does the biosphere store carbon?

all organisms are made of carbon, so plants and other living things

How does the hydrosphere store carbon?

carbon dioxide is dissolved to form carbonic acid which marine animals make shells from

How does the lithosphere store carbon?

in deposits of minerals and fossil fuels

How does the atmosphere store carbon?

in gases such as carbon dioxide

How are fossil fuels formed? What happens when organic matter decomposes?

when an organism decomposes its carbon is mostly deposited in the soil where it is compressed to form minerals such as marble and limestone and over millions of years the deposits can form fossil fuels

What is in the hydrosphere?

water as a liquid, solid and gas (water, ice and water vapour - a greenhouse gas)

Where dies aerobic respiration occur?

mitochondria

equation for photosynthesis

carbon dioxide + water (uses the solar energy from sunlight) = sugar + oxygen

equation for aerobic respiration

glucose + oxygen = carbon dioxide + water + energy

What is cellular respiration?

also known as aerobic respiration Earth’s organisms undergo it to transform sugar and oxygen to energy

What is nuclear energy: how does it work?

nuclear energy is the splitting of uranium atoms to form heat, this heat warms water to create steam which turns turbines that then transfer energy.

What are the pros and cons of nuclear energy?

The pros are that it releases little carbon if any (it is green energy) but the cons are that it is dangerous, unpredictable and it produces toxic and harmful waste which is potentially radioactive