The KT boundary marks a mass extinction event. the KT boundary is the time between the Cretaceous and Tertiary periods. An asteroid hit the earth at the end of the Cretaceous and that caused the end of the Cretaceous period. Before the KT boundary, pollen from angiosperms and gymnosperms is high. After the meteor hits the earth, a mass extinction occurs and the amount of pollen from gymnosperms and angiosperms decreases dramatically, while the amount of spores from ferns increases. During the Cretaceous period there were many species of gymnosperms and angiosperms but they disappeared at the KT boundary, when the asteroid hit the earth.
DNA replication occurs in the synthesis stage and is followed by the gap 2 stage
Answer:
cut down and remove every tree from (an area)
Explanation:
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Tissue only found in the heart creates smooth muscle moves bowels and vessels skeletal muscle fibers striated muscle tissue control of somatic nervous system
Plant cells have cell wall but animal cells don't have any cell wall.
