Which of the following is not a problem associated with dams?

changes to waterways ecosystems.

economic advantages.

siltation behind the dam.

Dam maintenance and breaks.

Genetically modified beef offers great benefits to producers and farmers. Buyers should be aware of which of the following regarding this biotechnology?

Procaryotes are distinguished from eukaryotes on the basis of what structure? (More than one answer is correct) a. a membrane-bound nucleus b. plasmid DNA c. RNA molecules d. presence of mitochondria or chloroplasts

Professor Kingston is interested in understanding the origins of gambling addictions. To study the brain activity of gambling addicts, Professor Kingston tracks oxygen flow in their brains while they engage in online gambling.

The large artery leaving the heart is called the

Compact bone vs spongy bone

Which kind of data is most closely related to a food's nutritional value? A. cost per serving, as listed on the food's price tag. B. amount of carbohydrates per serving, as listed on the food's label. C.

Which of the following is NOT a type of nucleic acid? a. DNA c. mRNA b. RNA d. dRNA

Explain the 3 major conditions for the establishment of species.

How did the second Industrial Revolution affect the United States? a. It lessened the demand for additional national defense. b. The United States began to concentrate on expanding outside the continent. c. It increased the demand for raw materials.

Science Riddle of the Day: Whats The Most tiniest Virus Ever?