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Giraffes with short necks lived in arid regions. Over time, grasses disappeared, forcing giraffes to eat from trees. Mutations in the genome led to some giraffes inheriting the trait for long necks. Over
answered
Nov 22, 2018
Chemistry
high-school
4
votes
175k
views
The record for the boston marathon's weelchair division is 1 hour, 18 minutes, and 27 seconds.The boston Marathon is 26.2 miles long.What's the average speed of the record winner of the weelchair division?
answered
Feb 6, 2018
Mathematics
middle-school
3
votes
217k
views
Abigail is putting tiles on a table top.she needs 48 tiles for each of 8 rows. Each row will have 6 white tiles. The rest of the tiles will be purple. How many purple tiles will she need?
answered
Jan 18, 2018
Mathematics
middle-school
5
votes
73.0k
views
why was the roman empire divided into two halves the empire was split up based on cultural and religious beliefs. it was difficult to protect one large empire against germanic invasions. each half could
answered
Aug 24, 2017
History
high-school
4
votes
52.7k
views
The primary focus of a persuasive speech
answered
Jan 7, 2017
English
high-school
7
votes
161k
views
a white mouse is crossed with a black mouse. all the offspring were gray. the genes for fur color in mice show?
answered
Nov 5, 2016
Biology
middle-school
3
votes
140k
views
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