PLZ HELP ITS DUE BY 5pm TODAY Part A: Define the Problem
Despite the availability of cleaner energy sources, most of the energy used to power American homes comes from the burning of fossil fuels such as coal and oil. The burning of fossil fuels releases carbon dioxide into the air. Carbon dioxide is a greenhouse gas that contributes to climate change.

Why do you think it’s a challenge to reduce fossil fuel usage in homes in the United States? How could the use of fossil fuels affect the biodiversity in neighborhoods and the surrounding ecosystems?
4+ paragraphs (8 sentences in each paragraph)

For more than a century, burning fossil fuels has generated most of the energy required to propel our cars, power our businesses, and keep the lights on in our homes. Even today, oil, coal, and gas provide for about 80 percent of our energy needs.

And we’re paying the price. Using fossil fuels for energy has exacted an enormous toll on humanity and the environment—from air and water pollution to global warming. That’s beyond all the negative impacts from petroleum-based products such as plastics and chemicals. Here’s a look at what fossil fuels are, what they cost us (beyond the wallet), and why it’s time to move toward a clean energy future.

Explanation:

i  can't explain it.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do