Answer:
b. There has been little to no recent growth in renewable energy use due to a lack of environmental concerns with the use of fossil fuels.
Explanation:
Fossil fuels have had tremendous negative impacts on the environment and humans as well. For that reason, the use of renewable sources of energy, such as hydropower and biomass, have become increasingly popular over the last few decades.
Answer:
i believe it is A: air because carbon comes from air so if they take in the air to maike it they are also taking in carbon
Explanation:
Answer:
Scientists can study tree rings in ice to learn more about past climates.
Explanation:
i think this is right one.
The answer is actually 4.4 billion years, but i guess you can estimate to 4.5
