About how much time did it take for the ancestors of modern giraffes to evolve the long necks of modern giraffes? a. a year b. many decades c. hundreds of years d. millions of years

Sammi is studying the interaction of the digestive and circulatory systems in the human body. she has listed various processes that occur in each of the systems. put the processes in order to describe the interaction between these two systems. tiles nutrients diffuse through the villi of the small intestine. digestive processes break nutrients down in the mouth, stomach, and small intestine. blood is pumped through the circulatory system to deliver nutrients to other organs. nutrients are ingested at the mouth. nutrients enter the capillaries of the circulatory system. sequence

Which of the following is the main purpose of a human community?

What are the types of mutations, and how does each alter the encoded protein? college level answer