Biology, 25.07.2019 15:00 puremousetail
Cyanobacteria are important to the evolution and advancements of other life on earth because they a) were the first lifeform on earth. b) produced oxygen from photosynthesis. c) were the first group of organisms to leave a fossil record. d) were thought to have become mitochondria in the cells of animals.
Answers: 2
Biology, 21.06.2019 20:00
Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle
Answers: 1
Biology, 22.06.2019 02:30
Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .
Answers: 2
Biology, 22.06.2019 05:30
Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d
Answers: 2
Cyanobacteria are important to the evolution and advancements of other life on earth because they a...
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