2+2+2 pls answer this question

How many major plates cover the earth

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

How does the diagram explain ocean currents? earth tilt 23.5 degreesquestion 1 options: earth's tilt causes uneven heating of earth which causes currents.earth's tilt causes the ocean to move because of gravity.earth's tilt and its rotation cause currents.earth's tilt causes uneven distribution of salt which causes currents.