What are possible causes of cystic fibrosis? Select all that apply.

the existing CFTR proteins being too aggressive at their job
CFTR proteins not being produced or functioning properly
too many CFTR proteins being produced by cells
a faulty CFTR gene

Place the steps tor the formation of the enzyme pepsinogen in correct order

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex