Fossils allow scientists to determine when and for how long a certain species lived. what can scientists deduce from this discovery? a. earth's life has changed over time b. which fossils are heavier c. explain how earth remained unchanged d. the food sources that were available

Does mitochondria still meet the definition of a eukaryote why or why not?

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

Did you know that a blue wales tongue weighs more than an elephant?