What kind of new therapies are scientists working on to treat cystic fibrosis? Select all that apply.

gene therapies to fix the CFTR gene
injections to add water directly to the mucus
inhalers to deliver CFTR to the cells
gene editing to remove the CFTR protein

Marianne is comparing two animals: a fruit fly and a fruit bat. she asks, "do a fruit fly and a fruit bat share a common ancestor in their evolutionary history? " according to evolutionary theory, what is the answer to marianne's question?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Look at the photo of the leaf, which term best describes this leaf ? a-simple. b-parallel. c-lobed. d-tooth.