homewhelpplease homewhelpplease

25-04-2017
Biology

contestada

Why is maple sap collected in the spring instead of the fall?

Respuesta :

ThomasTheTank ThomasTheTank

25-04-2017

Sap flows when daytime temperatures rise above freezing (32 degrees Fahrenheit / 0 Celsius) and nighttime temperatures fall below freezing.
The rising temperature creates pressure in the tree generating the sap flow.

Answer Link

Otras preguntas

Why is it better for the u.s. to import many goods needed by its citizens instead of producing all of them?

Explain why it is important to accept your anger?

40 pts please help! What role did Vladimir play in bringing Christianity to Kiev? He led all of Kiev in a mass conversion to Eastern Orthodoxy.

How to rewrite g(x) in terms of f(x) when f(x)=1/x given g(x)=[4/(x-1)] 1?

What is the equation of the line that passes through the points [4/5,1/5] and [1/2,3/2]?

How might a psychiatrist describe a paper plate?

Jerry's basketball team makes 40 baskets for a total of 92 points in a basketball game. some of the baskets are worth 2 points, and some are worth 3 points. how

What is 7 4/21 as a improper fraction?

algebra 2 how do you write the equation of the graphs?

What is 50 tens ×4 hundred = 40 tens × 5hundred true or false?