What is believed to have brought on the mass extinction at the end of the Cretaceous period that ceded dominance of the land from dinosaurs to mammals?

a. disease epidemic
b. volcanic eruptions
c. asteroid impact
d. genetic defect


c. asteroid impact

Biology & Microbiology

You might also like to view...

What are the three factors that regulate blood pressure?

What will be an ideal response?

Biology & Microbiology

Which sentence describes the principle of independent assortment?

a. Genes on the same chromosome are always inherited together. b. Two alleles for a single trait are randomly sorted to individual gametes; chromosomes are not mentioned. c. Alleles on different homologous chromosomes are not randomly sorted to individual gametes. d. Genes on the same

Biology & Microbiology

Evolution is based on adaptations that aid in the survival and reproduction of a species. List three different adaptations

What will be an ideal response?

Biology & Microbiology

The striations (lines) of skeletal muscles are caused by the arrangement of many elongated ________

Fill in the blank(s) with correct word

Biology & Microbiology