Historically, until approximately 1950, what had been the most important method of increasing the world's food supply?
What will be an ideal response?
Answer: expand land area under agriculture
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Which of the following occurs when DNA is transcribed to mRNA?
A) Both the exons and introns are transcribed in sequence. B) Both the exons and introns are transcribed, but their sequence is changed. C) Only the exons are transcribed. D) Only the intros are transcribed.
Total household debt as a percentage of personal disposable income has remained steady in the U.S
Indicate whether the statement is true or false
What happens to climax communities after a disruption? How do these communities re-establish
themselves after a disruption like a tropical storm? What is this process called? What will be an ideal response?
What is the primary difference between a saline lake and a freshwater lake?
A. saltiness B. temperature C. water depth D. type of natural basin E. no difference