I believe the answer is c
One of the main differences between butter and canola oil is that are room temperature one is a solid and the other is a liquid. This change in phase is due to the bonding between carbon bonds, the more double bonds that there are present the higher the melting point and the fluidity changes. Based on this the correct answer is C=C is found in canola oil while more C-C bonds are found in butter, making option 2 (C=C) the correct answer. In addition option 3 (C=H) can be ignored since hydrogen can only make single bonds. hope this helps:)
4. Large, circular lily pads are able to float on the water's surface.
Answer: cohesion
Cohesion mean that water attracted to another water. This force will make the water to form a surface tension in the lake. Water lily has a wide and thin leaf which makes it giving a low force per area. If the force applied on the surface is not bigger than surface tension, the leaf will stay float above the water. Surface tension also the reason water spider could walk on water.
5. The temperature of the water is about 5°C, while the temperature of the air is about 21°C.
Answer: heat capacity
Water has high heat capacity. High heat capacity mean that the water will not be easily become cold or hot. It will need more energy to increase/decrease the temperature of the water. This is why the water could keep its temperature much lower than the atmosphere. This will protect the organism inside the water from an extreme temperature change.
Fertile land is lost, and there is increased pollution and sedimentation in rivers and other aquatic areas.