Q1: Lesson 3 | Earth's Subsystems Flashcards
1
Q
any entity that consists of interrelated parts or components
A
system
2
Q
free exchange of energy and matter
A
open system
3
Q
exchange of energy only, not matter
A
closed system
4
Q
is earth a closed or open system
A
closed
5
Q
interaction among a vast combination of factors that enable it to support life
A
earth system
6
Q
first life forms were discovered in _______
A
water
7
Q
most abundant element in our atmosphere
A
nitrogen
8
Q
when is the time where air quality is the best
A
afternoon
9
Q
time where there is worst air quality
A
midnight
10
Q
most important component in our atmosphere
A
oxygen
11
Q
first organisms to photosynthesize
A
bacteria
12
Q
the part that fresh water and saltwater dont mix
A
estuary
13
Q
A
