Sickle-cell anemia is caused when a mutation results in the replacement of glutamate with valine. which type of mutation is observed here?
a. chromosomal mutation
b. frameshift mutation
c. substitution mutation

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

The pie chart tracks the percentage of renewable energy that's being used in a particular community near the ocean. what are two advantages of using this type of graph for this particular data set?