Why don't the present shapes of the continents fit perfectly into a supercontinent?

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water

Which of these is most likely a characteristic of a non-radioactive daughter isotope after it is form from the parent isotope a . stable electron’s b. stable nucleus c. positively charged atom d. negatively charged atom