Earth’s human population reached ____________________ in 2011 and is prjected to be
____________________ in 2045. Fill in the blank(s) with the appropriate word(s).
7 billion, 9 billion
You might also like to view...
Along with China, Russia and Saudi Arabia, the United States is among the world's top five energy producers
Indicate whether this statement is true or false.
Two species of insects do not interbreed because their sexual organs will not fit together. This is an example of
A) allopatric speciation. B) sympatric speciation. C) a prezygotic reproductive barrier. D) a postzygotic reproductive barrier.
Which amino acid is involved in the cross-linking found in insoluble collagen?
A) isoleucine B) leucine C) lysine D) proline
Which of the following is NOT a problem being addressed by environmental scientists?
A. Providing clean drinking water. B. Creating a better transportation system for food distribution to the populace. C. Finding resources for a human population growing at almost 80 million people a year. D. Assessing and finding solutions to climate change. E. Creating processes that promote sustainability in everyday life.