About this Study Set
This study set covers Statistics through
20 practice questions.
Test your knowledge of statistical facts related to animals, nature, and the environment. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Statistics in Nature study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the approximate percentage of Earth's surface covered by oceans?
-
A
About 25%
-
B
About 50%
-
C
About 71%
-
D
About 90%
2
Approximately how many species of birds are estimated to exist on Earth?
-
A
Around 1,000
-
B
Around 5,000
-
C
Around 10,000
-
D
Around 50,000
3
What is the average lifespan of a giant panda (in the wild)?
-
A
5-10 years
-
B
15-20 years
-
C
25-30 years
-
D
40-50 years
4
Roughly what percentage of the world's freshwater is locked up in glaciers and ice caps?
5
What is the approximate number of known insect species on Earth?
-
A
100,000
-
B
500,000
-
C
1 million
-
D
10 million
6
On average, how many times does a giraffe's heart beat per minute when at rest?
-
A
10-20
-
B
30-40
-
C
50-60
-
D
80-90
7
Approximately what percentage of the Earth's atmosphere is made up of nitrogen?
8
What is the approximate daily water intake of an adult elephant?
-
A
5-10 liters
-
B
20-30 liters
-
C
50-70 liters
-
D
100-150 liters
9
Around how many active volcanoes are there on Earth?
-
A
Less than 100
-
B
About 500
-
C
About 1,500
-
D
Over 10,000
10
What is the approximate percentage of oxygen in the Earth's atmosphere?
11
How many times does a hummingbird's heart beat per minute during normal flight?
-
A
50-100
-
B
200-400
-
C
600-800
-
D
1000-1200
12
What is the approximate number of different types of fungi known to science?
-
A
10,000
-
B
50,000
-
C
150,000
-
D
1 million
13
On average, how many earthquakes of magnitude 2.0 or greater occur globally each year?
-
A
Around 10,000
-
B
Around 50,000
-
C
Around 100,000
-
D
Around 500,000
14
What is the approximate speed of a cheetah's sprint (in km/h)?
-
A
40-60 km/h
-
B
70-90 km/h
-
C
100-120 km/h
-
D
150-170 km/h
15
Approximately what percentage of the Earth's deserts are covered by sand?
16
How many teeth does an adult lion typically have?
17
What is the approximate number of trees in the Amazon rainforest?
-
A
10 billion
-
B
50 billion
-
C
100 billion
-
D
390 billion
18
On average, how long does it take for a sea turtle to lay eggs?
-
A
10-20 minutes
-
B
30-60 minutes
-
C
1-2 hours
-
D
3-4 hours
19
What is the approximate percentage of Earth's land area that is covered by forests?
20
How many species of whales are estimated to exist?
-
A
About 20
-
B
About 50
-
C
About 90
-
D
About 150
