Chapter 8.2 Life has Changed and Diversified Over Time✓(didn't add table 8.1 pg 251)

Question 1

Write the geological times in order?

Answer 1

-Eons
-Eras
-Periods
-Epochs

Question 2

What variable is geological time expressed in?

Answer 2

mya (million of years ago)

Question 3

Define fossil

Answer 3

Preserved remains or traces of an organism

Question 4

Define biogeography

Answer 4

The study of the distribution of organism and ecosystems across the world and through geological time

Question 5

Describe how the study of biogeography can provide evidence for evolution

Answer 5

Biogeography shows that related species are found in the same areas, suggesting they share a common ancestor.

Question 6

Discuss possible effects on a population of large land herbivores if their climate becomes warmer and wetter

Answer 6

-More food from increased plant growth could boost population size
-Habitat changes may reduce open areas, affecting species adapted to them
-New competitors or predators might move in, impacting survival
-Natural selection may favour traits better suited to the new environment, leading to evolution over time.