Which of the following instruments did scientists use to observe cells and formulate the cell theory?

a: magnifying glass
b: microscope
c: peice of glass
d: eyeglass lens

Nucleic acid certain protein cell membranes certain carbohydrates

Pls ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

What happens to the average kinetic energy of water molecules as water freezes?