If microscopes that could take closer looks were in existence, why do you think it took so long for scientists to come to the realization that living things were made of cells?

Autotrophs a.consume their food to get energy b.may use photosynthesis to gain energy c.are also called consumers d.cannot use solar energy

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated