It seems like it bittersweet. If you are allowed to use transitions then, it would be like cheerful happy joyful to sad dark gloomy and then cheerful happy and joyful again.
Answer:
the quality or state of being selfish; lack of consideration for other people.
D) Emotions motivate pet lovers to clone their pets.
Nouna mild or indirect word or expression substituted for one considered to be too harsh or blunt when referring to something unpleasant or embarrassing.
Answer:
It's because some countries are prone to natural disasters,so they limit the height of houses to prevent excess damage in case of a natural disaster,for example an earthquake..
I hope this helps