1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Afina-wow [57]
3 years ago
7

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

Biology
1 answer:
tigry1 [53]3 years ago
8 0
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.
You might be interested in
What’s a good analogy of the immune system
horrorfan [7]

Answer:

The immune system works like what happens when a prisoner is breaking out of their cell. The Cell Mediated Response in the immune system is when killer t-cells attack any cell that has a pathogen on it. In this analogy, the cell-mediated response is the orders given by the police officer.

Explanation:

4 0
3 years ago
If you wanted to start a new business that rents sun-shielding umbrellas to tourists, which of these risks would be MOST IMPORTA
olganol [36]
You didn’t put any of the choices for the risks, but I believe something important to consider is making sure that the tourists return the umbrellas.
6 0
4 years ago
Read 2 more answers
This snake will sometimes bunch together in big ball of mostly males during mating which s called a mating ball who is it
elena-14-01-66 [18.8K]
Red sided garter snakes.
4 0
3 years ago
Read 2 more answers
Efferent neurons are also called _________ neurons: they camy impulses from the CNS to muscles and glands.
algol13

Answer: d. motor

Explanation:  Efferent neurons are motor neurons. They are called efferent neurons because they transport nerve impulses out of the central nervous system (CNS) to effectors such as muscles or glands.

8 0
3 years ago
Plz help me with this need answers quick!
Alborosie
No because it does not  breath like us

3 0
4 years ago
Read 2 more answers
Other questions:
  • how many kinds of alternative energy sources are there and can you plz tell me the names and what they do
    7·2 answers
  • A nurse is caring for a client in the postpartum period. when observing the client’s condition, the nurse notices that the clien
    15·1 answer
  • 4. What is evolution? Explain how artificial selection causes populations to change.
    10·1 answer
  • Which units in the metric system are used to measure distance?
    7·2 answers
  • What do genes contain the code for?
    15·1 answer
  • What events marked the beginning of the paleozoic era
    7·1 answer
  • Explain why earthquake and volcanoes appear in generalized belts around the planet the planet
    15·1 answer
  • Which of the following describes the relationship between genes and chromosomes?
    11·1 answer
  • What is The Big Dipper is called in Astronomy?
    5·2 answers
  • Which of the following factors would be LEAST likely to have an impact on the carrying capacity of an ecosystem?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!