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What is a characteristic of aging and the immune system? a. immunity in older people does not seem to be affected by regular exercise. b. immune function does not decline with age in people who maintain
answered
Aug 24, 2018
Biology
high-school
6
votes
24.6k
views
Which is a freshwater region characterized as a large standing body of water? A. lake B. river C. ocean D. stream
answered
Aug 11, 2018
Physics
middle-school
4
votes
151k
views
the thermal transfer of energy by electromagnetic waves through the vacuum of space. evaporation radiation convection condensation
answered
May 15, 2018
Biology
high-school
1
vote
54.0k
views
WHY WAS JEFFERSON CONCERNED ABOUT THE LOUISIANA PURCHASE?
answered
May 4, 2018
History
high-school
4
votes
123k
views
Rose went to a stationary shop.she purchased 2 packs of red pens,4 packs of black pens,and 3 packs of blue pens.the cost of each pack of pens was $2.50.which expression shows the total amount rose spent
answered
Jan 2, 2018
Mathematics
middle-school
4
votes
176k
views
If a student fails to recognize how to properly quote the words of an author, that student may be found guilty of_. a. intentional plagiarism b. unintentional plagiarism c. intentional citation d. unintentional
answered
Jun 24, 2017
English
high-school
3
votes
175k
views
Which element is found in both dna and protein
answered
Nov 19, 2016
Biology
high-school
5
votes
73.3k
views
What two particles account for almost all of the mass of an atom?
answered
Jan 28, 2015
Chemistry
middle-school
2
votes
136k
views
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