30 !
why is it important to find new medicines from chemicals in marine organisms?
a. marine organisms produce chemicals with more antibiotic properties than those from land organisms.
b. marine organisms are immune to all types of bacteria.
c. marine organisms may contain more susceptible bacteria than land organisms.
d. marine organisms may contain undiscovered chemicals that can be developed into new drugs.

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?