Answer: I believe/don't believe hummingbirds are attracted to the color red because ... (Enter your reasons)
Explanation:
Hypothesis are always different, up to you to choose believe or not believe depending on your position.
:) Hope this helped.
I would say the last maybe because my sister just got back from switerland not to long ago
Density= 1.2092 because density = mass/volume
Answer: a. Have an overall neutral charge
b. Have electrons that are not equally shared
d. Have slight positive and negative ends
Explanation:
Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself.
A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms. Example: 
The more electronegative element i.e. chlorine acquires a partial negative charge as it withdraws the electron density towards itself. Thus hydrogen acquires a partial positive charge. The opposite charges cancel each other and thus overall it is electrically neutral.