Ple 1.) what is a function of carbon dioxide ( co2) in the body? a.) regulate the ph of blood b.) adds structure to hair c.) energy source d.) energy storage 2.) what is sodium chloride (nacl)? a.) a protein b.) a carbohydrate c.) an ionic compound d.) a covalent compound 3.) which type of substance is protein? a.) a small molecule b.) a large molecule c.) an ionic compound d.) an ion 4.) which type of substance is calcium phosphate (ca3(po4)2)? a.) it is a small molecule b.) it is a large molecule c.) it is an ionic compound d.) it is an ion 5.) which small molecule makes up about 70 percent of cells? a.) dna b.) fat c.) oxygen d.) water 6.) which of these large molecules are important for energy storage? a.) dna and lipids b.) dna and rna c.) lipids and starches d.) rna and starches

You could google most of these btw!

Explanation:

(1.) The answer is A

(2) The answer is c

(3)  The answer is B

(4)  The answer is C

(5)  I think that the answer is B, but I am not 100% sure

(6) I think that the answer is C, but I'm not 100% sure

Hope this helps. and have a great day!

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.