Why is the concentration of carbon dioxide in Earth's atmosphere rapidly increasing?
A) More photosynthesis is occurring.
B) Earth is warming.
C) The oceans are cooling.
D) The ozone layer has become much thinner.
E) Many human activities release carbon dioxide.
E
You might also like to view...
Charles Darwin noted that the human lineage probably arose out of Africa. Which of the following was most likely the reason behind his hypothesis?
A. Africa has warmer temperatures, which allows for greater diversity. B. Gorillas and chimpanzees, which are the primates most closely related to humans, only live in Africa. C. Africa was the first land mass that was suitable for life. D. This was before the advent of molecular analysis, so Charles Darwin was incorrect. E. None of the answer options are correct.
The granules of neutrophils contain ________.
A. histamine B. antigens C. digestive enzymes D. peroxidase E. antibodies
Dalton’s law of partial pressures states that the total pressure of a mixture of gases is equal to the sum
of the pressures of the individual gases. ____________________ Indicate whether the statement is true or false.
Which of the following is a multicellular mass that nourishes the embryo until it becomes a self-supporting seedling?
A) the endosperm B) a seed coat C) a fruit D) a cotyledon