About this Study Set
This study set covers Pre-Calculus through
18 practice questions.
Explore pre-calculus concepts through fascinating facts about 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 18 questions from the
Pre-Calculus Nature Facts study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
The Fibonacci sequence, often observed in nature, starts with 0 and 1. What is the next number in the sequence?
2
Coral reefs, vital marine ecosystems, grow outwards. If a reef grows at an average rate of 1.5 cm per year, how much would it grow in 10 years?
-
A
1.5 cm
-
B
10 cm
-
C
15 cm
-
D
150 cm
3
A sunflower's seed arrangement often follows a spiral pattern related to the golden ratio. If a sunflower has 34 spirals in one direction and 55 in the other, these numbers are:
-
A
Prime numbers
-
B
Consecutive Fibonacci numbers
-
C
Perfect squares
-
D
Powers of 2
4
The population of a certain insect species doubles every week. If there are 10 insects initially, how many will there be after 3 weeks (assuming no deaths)?
5
The Amazon rainforest produces about 20% of the world's oxygen. If it were to decrease its oxygen production by 1/5, what percentage would it produce?
6
A single oak tree can release up to 100 gallons of water per day through transpiration. How many days would it take for one tree to transpire 1000 gallons?
7
The average speed of a migrating monarch butterfly is about 12 miles per hour. How far would it travel in 3.5 hours?
-
A
12 miles
-
B
24 miles
-
C
36 miles
-
D
42 miles
8
A particular species of algae doubles its area every day. If it covers 4 square meters on day 1, how many square meters will it cover on day 4?
9
The height of a certain type of bamboo can increase by up to 3 feet in a single day. If this rate is maintained, how many feet would it grow in 1/3 of a day?
-
A
1 foot
-
B
2 feet
-
C
3 feet
-
D
9 feet
10
A desert tortoise can live for over 100 years. If a tortoise is 75 years old, what fraction of its maximum lifespan has it lived?
11
The circumference of the Earth at the equator is approximately 24,901 miles. If a scientist were to travel 1/10 of this distance, how many miles would they travel?
-
A
249 miles
-
B
2,490 miles
-
C
24,901 miles
-
D
249,010 miles
12
If a river flows at an average speed of 5 miles per hour, and a salmon swims upstream against the current at 2 miles per hour, what is the salmon's effective speed relative to the bank?
-
A
2 mph
-
B
3 mph
-
C
5 mph
-
D
7 mph
13
A mature giant sequoia tree can absorb about 400 gallons of water per day. How many days would it take for such a tree to absorb 2,000 gallons?
14
The average depth of the Pacific Ocean is about 13,000 feet. If a diver descends to 1/4 of this depth, how deep are they?
-
A
3,250 feet
-
B
6,500 feet
-
C
10,000 feet
-
D
13,000 feet
15
A bee colony can have up to 60,000 bees. If 1/10 of the bees are foraging at any given time, how many bees are foraging?
-
A
600
-
B
6,000
-
C
10,000
-
D
60,000
16
The average annual rainfall in a rainforest can be 80 to 400 inches. If a rainforest receives 200 inches of rain in a year, and 1/4 of that rain falls in the first quarter, how many inches fall in the first quarter?
-
A
25 inches
-
B
50 inches
-
C
100 inches
-
D
150 inches
17
A bat can eat up to 1,000 insects per hour. If a bat feeds for 2.5 hours, how many insects can it eat?
-
A
1,000
-
B
2,000
-
C
2,500
-
D
5,000
18
The speed of light in a vacuum is approximately 186,282 miles per second. If a photon travels for 0.5 seconds, how far does it travel?
-
A
93,141 miles
-
B
186,282 miles
-
C
372,564 miles
-
D
931,410 miles
