HELP PLEASE ASAP 1. Three sources of energy come in the form of:

2. How does the phophocreatine system work?

3. What are the two by-products of the aerobic energy systems?

1.Solar Energy.

Wind Energy.

Geothermal Energy.

2.The muscles of the body function through the use of ATP, or adenosine triphosphate, to power contractions.

3.The second and third stages of the aerobic energy system continue the breakdown of glucose that was started by aerobic glycolysis and result in the formation of the by-products carbon dioxide (CO2) and water (H2O), and the synthesis of more ATP.

i think it would be c. or a. i recommend a if it's not a than it's c if it's not c than it's b your welcome : ) sorry if you get it wrong

1. the details that would clarify the authors purpose for writing would be after the "haley collected used soccer jersey and sent them to guatemalan children." part, he would say, "and you can also donate today to save ". so far in the text, you can see no such thing. if, near the end the author persuades you to donate to guatemalans, then you know that the author's reason to write is to persuade you.

2. what details would make the text more engaging is to see the guatemalan children's reaction to getting free jerseys.

3. the details that convey the author's attitude would be an opinion by the author, for example, if he said, "haley was a very nice girl " or, you can find the attitude by finding parts of haley's personality that he highlights. you can strengthen your tones by using more descriptive words, and simplify long sentences as much as you can.

you're welcome ; p