What does al Gore,author of an inconvenient true, demonstrate about the level of atmospheric carbon dioxide levels?
Each year, the CO2 level rises and then falls. Over the past 50 years, it has steadily increased.
Each year, the CO 2 level increases at a faster rate. Over the past 50 years, it has nearly doubled.
Each year, the CO2 level decreases. Over the past 50 years, it has steadily decreased.
The correct answer is:
Each year, the CO2 level increases at a faster rate. Over the past 50 years, it has nearly doubled.
According to An Inconvenient Truth, what is the role of infrared radiation in global warming?
A. All of the sun’s energy is converted to infrared radiation and then remains in the atmosphere. This warms the atmosphere.
B. Over time, infrared radiation makes the atmosphere thinner. This warms the atmosphere.
C. Greenhouse gases trap some infrared radiation in the atmosphere. This warms the atmosphere.
C. Greenhouse gases trap some infrared radiation in the atmosphere. This warms the atmosphere.
In which sentence below is the underlined word an indirect object?
A. Gore published *An Inconvenient Truth* a few years after he ran for president.
B. My sister gave *me* a signed copy of the book
c. She said she preferred the documentary *film*
B. My sister gave *me* a signed copy of the book.
When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this
observation? (1 point)
(A)Iron oxide has oxygen atoms, and pure iron does not.
(B)The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.
(C)The iron atoms in iron oxide have more mass than pure iron.
(D)There are more iron atoms in iron oxide than in pure iron.
(B) The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.
substance. Given that matter is neither created nor destroyed, which chemical formula is the product of this reaction? (1 point)
Ca2CO3
CaCO2
Ca203
0 CaCO3