Y11 BIO

Question 1

How has the reduction of sea ice and glaciers impacted polar bear populations?

Accepted Answer

Less sea ice makes hunting harder, causing starvation & population decline

Question 2

According to the Law of Superposition, which of the following is most accurate?

Accepted Answer

The lowest undisturbed rock layers are the oldest

Question 3

What information do Aboriginal Rock Paintings provide to scientists studying past ecosystems?

Accepted Answer

records of observations about past animals and environmental change

Question 4

Guy Callendar was one of the first to link rising global temperatures with increased CO₂ from fossil fuel use.

Accepted Answer

True

Question 5

How does an increase in carbon dioxide affect the Earth's climate system?

Accepted Answer

Traps more heat, raising global temperatures

Question 6

What trend has been observed in CO₂ levels since the industrial revolution?

Accepted Answer

Significant increase with fluctuations

Question 7

Sclerophyll plants have adapted to become suited to what type of conditions?

Accepted Answer

Nutrient-poor and arid environments

Question 8

Which field of science studies rock layers and formations

Accepted Answer

geology

Question 9

What is a likely cause of a mass extinction event?

Accepted Answer

Asteroid impact, volcanic activity, rapid climate change, sea level changes

Question 10

Why is it important to study past ecosystems?

Accepted Answer

To understand how life and climate have changed over time

Question 11

Banded Iron Formations tell us that Earth once lacked...

Accepted Answer

Oxygen in the atmosphere

Question 12

Radiometric dating can be used to date both igneous and sedimentary rocks directly.

Accepted Answer

False

Question 13

Ice core samples and gas analysis provide scientists with information about:

Accepted Answer

Composition and changes in past atmospheres and climate patterns

Question 14

What does radiometric dating measure to determine the age of rocks?

Accepted Answer

The ratio of unstable isotopes to stable daughter products

Questions 14