By measuring the UV-melting curves for the DNA of two different organisms (A and B) in the same solution and concentration, we have found the following melting temperatures (Tm): Tm(A)= 70.2 C and Tm(B)=75.6 C. Which of the following is correct? a. DNA molecule B requires less thermal energy to denaturate
b. DNA molecule A has more A and T than B
c. DNA molecule A denaturates equally to B
d. DNA molecule A has more G and C than B

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

the titanic would be the correct answer

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.