Scientists consistently link two catastrophic events with the five major mass extinctions recorded throughout earth's history. these two events are
a) global ice ages and the impact of asteroids.
b) the impact of asteroids and volcanic eruptions.
c) lack of atmospheric oxygen and volcanic eruptions.
d) global ice ages and the rise and fall of sea level.

The asian shore crab (hemigrapsus sanguineus) is an invasive species that has impacted the atlantic coast. predict what characteristic of this invader would most likely disrupt the biodiversity of this area.

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.