The diagram shows the process of cell differentiation. Which statement is true about the process shown?
A Cell 1 has a specific part of its DNA activated.
B Cell 2 undergoes a process to become a specialized cell.
C Cell 3 loses the ability to make a copy of itself.
D Cell 4 has the ability to modify into a stem cell.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

What class of levers is shown in this image?

Drag the tiles to the correct boxes to complete the pairs. match wach fossil with the layer where it’ll be present based on these condition