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When moving upward on an energy pyramid from one level to the next, what happens to the usable energy in an ecosystem?
answered
Apr 20, 2018
Social Studies
college
6
votes
8.8k
views
What is the part of a line with two endpoints?
answered
Feb 25, 2018
Mathematics
middle-school
3
votes
41.1k
views
When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20% of its normal value. What is a grizzly bear's normal heart rate when not hibernating?
answered
Dec 14, 2017
Mathematics
middle-school
2
votes
174k
views
The colonists' slogan
answered
Sep 5, 2017
Social Studies
high-school
5
votes
7.1k
views
What special authority did the bishop of Rome assume
answered
Jun 25, 2017
History
high-school
4
votes
47.5k
views
If the force of gravity changes, what happens to the mass of an object?
answered
Jun 7, 2016
Physics
high-school
2
votes
160k
views
Why a hen egg is considered as a cell?
answered
May 25, 2015
Biology
middle-school
1
vote
233k
views
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