How was the cretaceous period different from the jurassic period? a. the jurassic period had angiosperms, while the cretaceous did not. b. pangaea split during the jurassic period. c. there were dinosaurs in the jurassic period, which went extinct in the cretaceous period. d. conifers and ferns were present in the jurassic period, but not in the cretaceous period
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Biology, 21.06.2019 18:30
How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.
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Biology, 22.06.2019 15:00
Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources
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Biology, 22.06.2019 15:40
Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation
Answers: 1
How was the cretaceous period different from the jurassic period? a. the jurassic period had angios...
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