Which is the first type of cell to differentiate? neuron epithelial cell muscle cell blood cell

How do you date a sample of rock that you suspect as being one of the earliest on earth

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water