The invention of which instrument allowed scientists to discover cells?
a. eyeglasses
b. magnifying glass
c. microscope
d. telescope

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

What is the average speed of a car that traveled 300.0 miles in 5.5 hours