Identify the organelles (plant cell answers) A:Vacuole
B:Chloroplast
C:cell membrane
D:Golgi apparatus
E:endoplasmic reticulum
F:Cell wall

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?