In nutrient-poor conditions, a trophozoite cell rounds up into a sphere and its ectoplasm secretes a thick cuticle around the cell membrane. This process is called

Are the earth's ocean floor and continents the same age geologically? why or why not?

Me the formula cacl2 represents the compound

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse