Why do scientists that that photosynthetic prokaryotes were probably not the first life forms on earth

What two systems can combine to ensure the life activity of movement

How long would it take the sound to get from the calling monkey to another monkey if the monkeys were 2 km apart? Howler Monkeys

The atomic mass is the number of protons plus the number of neutrons O number of protons plus the number of electrons O number of neutrons O number of protons

What is the difference between evidence and inference?

Wetu During cellular respiration, every living thing in this food web uses environment gas and releases back into the A) carbon dioxide oxygen oxygen. carbon dioxide carbon dioxide hydrogen D) carbon dioxide water vapor

Which food supplies only discretionary kcalories? a. bagel b. peanut butter c. grape jelly d. raisins?

Members of which two domains of life are composed of one or more prokaryotic cells?

What causes autoimmune diseases?

Once you have the Refractive Index of a glass sample, what do you do with it? Combine the elemental values of glass to find the refractive index. Calculate the molecular weight using the periodic table. Look it up in an encyclopedia.

Chromosomes move to the middle of the cell during what phase