Presently, the annual average of CO2 is about 400 ppm, and the concentration is increasing by about ____ ppm per year
a. ?2
b. ?5
c. ?8
d. ?12
e. ?15
ANSWER: a
Environmental & Atmospheric Sciences
You might also like to view...
What is the effect of wave refraction along an irregular coastline?
What will be an ideal response?
Environmental & Atmospheric Sciences
Magma at spreading centers is low-temperature, high-viscosity, and granitic, with easy escape of gases, providing all the factors that promote the peaceful eruption of magma.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
El Niño (Spanish: the little boy) is caused by a warming of the ocean in the eastern Pacific which brings heavy rainfall and thunderstorms, but reduces fish
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which group of organisms has been most impacted by the loss of both deciduous and tropical forests?
A) migratory birds B) flying squirrels C) rabbits D) insects E) spotted owls
Environmental & Atmospheric Sciences