Tropical open ocean waters have the highest rate of primary productivity in the world's oceans.

a. True

b. False

Match the vocabulary words to their definitions. 1. diffusion a group of people who move from one area to another area during the same time period. 2.

Wich two system work together to deliver oxygen in cells throughout the body

Which bodies of water were used by the white army and their allies?

Explain what it means for Earth to be a living world. How does Mars compare? Is this a living world? Why or why not.

What is the total length of the coastline of mainland including andam and nicobar and lakshadweep island

Which of these is not an environmental effect of destroying wetlands A. loss of habitat B. increased air temperature C. poor absorption of rain water D. unfiltered water

Iron atoms combine with oxygen atoms to form rust. Is this a physical property of iron or a chemical property?

Kerri drive 310 miles in 5 hours at a constant speed. A) at what constant speed was Kerri driving? B) How long would it take her to drive 403 miles at the same speed?

Which tectonic plate pushes against the Eurasian plate to form the alps and other geographical features

Which of the following areas would most likely have the greatest amount of surface runoff? low, flat plain sandy beach steep mountainside V-shaped valley