please help this is for a really big grade thanks whoever gets it correct will be given brainliest and 50pts

Humans have increased the global temperature due to fossil fuel burning and are negatively contributing to the increase of CO2 emissions and greenhouse gases.

Explanation:

#1 Over the past century humans have negatively impacted the environment by increasing the global temperature due to fossil fuel emissions and a steady increase in the human population which has led to more resources being extracted and used.

#2 Human activities have brought a sudden increase in the global temperature recently due to the increase in greenhouse gas emissions from factories, automobiles, and homes. While we are beginning to use renewable resources, a large portion of our energy consumption still comes from the production and burning of fossil fuels.

#3 Some ways we can start to put a stop to global warming are by using renewable energy resources and decreasing the use of fossil fuel emissions. We can also decrease our carbon footprint by using electric powered vehicles and devices instead of petroleum burning automobiles and home appliances, and by riding bikes and walking over short distances.

Note: Please reword this a bit so you don't get in trouble for plagiarism.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.