What must be true of a person with cystic fibrosis?
a. at least one parent was a carrier for cystic fibrosis.
b. the mother was a carrier for cystic fibrosis.
c. one of the parents had the condition cystic fibrosis.
d. both parents had at least one allele for cystic fibrosis.

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell