Why should senior citizens perform balance exercises?

a. to build muscle tissue

b. to reduce chances of falls

c. to build overall endurance

d. to reduce "staying power"

What is the nature of "second signal molecules" in signaling pathways?

How could you demonstrate to a child that solid water is less dense than liquid water?

What type of rna carries the information that specifies a protein? double-stranded rna ribosomal rna complementary rna messenger rna transfer rna?

How does studying the DNA of different types of organisms provide evidence that all life on Earth is related

Why does a fox need to be in an ecosystem that includs grass?

A unique feature of dna is that it can duplicate itself through a process called

Flower color in a particular plant species is determined by one gene. The alleles of that gene can code for either red flowers or blue flowers. When a red plant and a blue plant are crossed, some of the offspring produce purple flowers.

Which is not an effect of smoking on the cardiovascular system? it contributes to atherosclerosis. it increases the blood's tendency to clot. it increases blood cholesterol. it increases the size of arteries and veins?

Mention the importance of pancreas

What substance is insoluble in water? quartz vinegar sugar salt