Sedimentary rocks are formed when soil, rocks, or the remains of dead organisms undergo layering and compaction over a long period of time. the mass of the sedimentary rock is equal to the mass of the a) the soil and rock parts.
b) organic materials in the rock.
c) inorganic materials in the rock.
d) the original items making the rock

Dna is always read in the whereas rna is read in .

Salmonella typhimurium is a food-borne bacterial pathogen that can cause severe gastrointestinal disease. salmonella is often phagocytosed by macrophages that normally destroy bacterial pathogens, but this bacterium is somehow able to prevent the complete maturation of phagolysosomes. salmonella is able to tolerate the low ph of phagolysosomes, and in fact responds to the drop in ph by secreting toxins that interfere with other cellular responses. which of the following differences would you expect to contribute to the survival of a bacterium within an salmonella-containing phagosome, compared to a healthy phagolysosome? decreased activity of acid hydrolases increased activity of acid hydrolases decreased import of h+ ions increased import of h+ ions my guess is decreased activity of acid hydrolases but i'm not sure.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?