If phosphorus concentrations were to suddenly increase in a marine ecosystem, which of the following would likely occur?

A) no change in the rate of primary productivity

B) increased primary productivity

C) decreased primary productivity

Deposits of gold can be found in the deep ocean. True or False

Which statement accurately describes the relationship between air pressure and altitude? a. At the altitude that commercial jets fly (12-15 km), air pressure is higher than 1 bar. b. Air pressure increases above 0.6 bar at an altitude less than 7 km.

Which of the following covers the area of the present day states of Washington, Oregon, Idaho and is between the Cascade Mountains on the Pacific coast and the Rocky Mountains? Columbia Plateau Death Valley Sonoran Desert Grand Canyon

What are convection currents and how do they promote cycling of matter?

What was the Pelopossion war

At what age do kids in Jordan begin school?

For which triangle does the equation 4^2+4^2 = c^2 apply?

Places to which the Rohingyas they were displaced

1. What is the trading route between the Indian Ocean and the Mediterranean Sea? 2. What lies between the Arabian Peninsula and India? 3. What is west of Yemen? 4. What is east of the United Arab Emirates? 5.

What types of areas are created by sinking, dry air at 30 degrees north or south latitude?