Compare and contrast land plant communities of the Triassic and Jurassic with those of the Cretaceous. What will be an ideal response?
The Triassic and Jurassic land flora were dominated by seedless vascular plants. The large
seed ferns were extinct by the end of the Triassic, but ginkgos were abundant and conifers
continued to diversify. Cycads arose in the Triassic. Angiosperms, true flowering plants,
evolved in the Cretaceous, and eventually arose to dominance.
You might also like to view...
Magma that is formed at subduction zones by partial melting in the descending plate
commonly has a/an ________ composition. a. basaltic d. glassy b. granitic e. carbonate c. andesitic
What type of magma is typically generated along hot spots?
a) mafic b) silicic c) intermediate d) both silicic and intermediate e) depends on the location of the hot spot
Political boundaries do not always match environmental boundaries. What does this mean for environmental protection in each country?
What will be an ideal response?
The volume of magma expelled in an eruption depends on ____ of the magma
a. ?the temperature and volatiles but not the viscosity b. ?the temperature and viscosity but not the volatiles c. ?both the viscosity and volatiles d. ?only the volatiles e. ?the temperature, viscosity, and volatiles