The correct answer is:
A. A group of related parts that work together to achieve a desired result.
I hope this answer was helpful!
It would be best to use a glass graduated beaker for the volume and a digital scale for the mass
Bright colors such as flowers or light green bushes/trees would result in an decrease in a blackbirds population because the blackbird wouldn't be able to blend into its environment due to the dark color it has, allowing many predators to spot it. So brighter colored environments would result in the decrease of the blackbird population.
Maybe the decrease in plants they eat
Otherwise known as deforestation
