How could the strength of an electromagnet be increased

A. use fewer coils of wire around the nail
B. use more coils of wire around the nail
C. use battery with less voltage
D. use a smaller nail

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

Agram of fat oxidized by cellular respiration produces approximately as much atp as a gram of carbohydrate.