Aparty shop delivers helium-filled balloons to homes and businesses. the owners realize from experience that on hot summer days they should inflate the balloons only three quarters full. on cold winter days they can fully inflate the balloons. which of the following is the best hypothesis to explain this observation?

a. air outside the balloons leaks into the balloons
b. the helium gas is more active in the winter season
c. as the temperature increases, the helium in the balloons expands.
d. outdoor air pressure in the summer is less than indoor air pressure

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

No because it not possibly

Conservation efforts have been effective in "increasing the number of endangered species, reducing all the negative impacts of human activity, and preserving wildlife habitats".hope my answer has you : )