Answer:Four spheres of earth are:1)Lithosphere(land) 2)Hydrosphere(water) 3)Biosphere(living things) 4)Atmosphere(air).
Energy and matter flow through Earth's four spheres.Energy flows through the atmosphere and hydrosphere mostly by convection.The continuous cycling of matter and energy through earth's system makes life on earth possible .Others are driven by energy from the sun.
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Land use goes up as human population goes up. This is because the more people there are alive, the more land that people will be using. Hope this helps :)
Because it codes for specific proteins and contains the genetic instructions needed in order for an organism to survive, develop and reproduce
A theory is a hypothesis that someone had but has not proven it.
A law is something that is proved.
Example: Sir Issac Newton had a theory on gravity he sat under a tree and then had a conclusion.
Answer is D. Timothy will lack testosterone and will probably be unable to achieve an erection
