johnnyhalusewa
02.03.2020 •
Biology
Subtract −b+3 from −11b−4 .
What is the answer?
−10b−7
10b+7
−12b−1
10b−7
Solved
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Ответ:
Solution:
-11b-4- (-b+3)
Two equal characters in succession replace with addition.
- (-b) = b
-11b+b= 10
A negative factor in parentheses changes the plus and minus in the parenthesis.
-(+3)= -3
-4-3= -7
Ответ:
The correct answer is option B
The population of maggots on the apple tree (apple maggot) that will mate on different trees could become reproductively isolated due to different habitat (ecological isolation).
Ecological isolation causes speciation by creating reproductive barriers between populations due to different habitats.The maggot populations will mate on different trees and will eventually speciate over a period of time.