What is a meteoroid that reaches earths surface without burning up?

Can anyone find the answers to the lab 2: exercise 1 bathymetric charts questions for sandy harbor so that i can check for accuracy?

"water seeps into rock cracks and dissolved minerals there.the solution travels through cracks in the. eventually concentrating into large crystals." which process is that

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?