Which of the following can explain the daily change in sea level observed along a coast? a. the concentration of salt in the water near the coast b. the speed of the ocean's conveyor belt near the coast c. the gravitational pull of the moon on the water near the coast d. earthquakes and volcanoes near the coast

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

The graph shows the solubility of several different salts in water, across a range of temperatures. according to the graph, which salt can dissolve at a concentration of about 60 g/100 cm3 of water at 40 degrees celsius?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?