Which statement about this diagram is correct?
a. molecule 2 is dna, which can be bond with another dna molecule
b. molecule 1 is rna, which contains thymine
c. molecule 1 in dna which if a double helix
d. molecule 2 in rna and it is the only nucleic acid that contains four types of bases

which statement explain the overall function of the two molecules in the diagram?
a. they make up an organism's physical structure.
b. they carry information about how an organism is put together and maintained.
c. they provide an organism with usable energy in the form of atp.
d. they store excess carbohydrates for later use.

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

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.

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?