A milk teeth is the temporary teeth that appears from a baby stage while a permanent teeth is one that appears after the milk teeth has been removed and if this teeth is removed it cannot be replaced. Hope this helps...
Answer:
Both (b) and (c)
Explanation:
Fats, steroids and waxes are some of the most common types of lipids. Lipids are non-polar hydrocarbons because of the presence of non-polar carbon-carbon and carbon-hydrogen bonds in there structure.
Generally, polar molecules are soluble in water while non-polar molecules are insoluble in water, hence, lipids do not dissolve in water. There non-polarity also makes them a suitable component in the selectively permeable biological cell membrane.
The answer is D. Water Framework Directive.
I'm guessing for no reproduction of other human beings
