How will you get rid of them? Will you collect potato beetles by hand or use pesticides? If you buy pesticides that will cost you more, but that will also affect the quality of your potatoes.
Will that price be affordable to most people? To whom will you sell your potatoes? What type of soil do potatoes prefer? If you buy a more fertile arable land, will you be able to grow more potatoes with less expenses? There are pests too, they might eat seedlings, leafs, tubers. Have you ever grown potatoes? Do you know how much money you need to invest to grow one kg of potatoes? You can make it cheaper if you don't use fertilizers, but how will that affect your crop? Will you get less potatoes? Does it pay off to buy fertilizers or not? At what cost will you sell your potatoes? Obviously, you can't sell them for the same amount of money you've invested to grow them, you need to earn something too. Even nowadays there are many examples of biology influencing economics. Back in the days of feudalism when arable land was the most valuable possession and the main source of income, knowledge about plants and how all the biotic and abiotic factors affect their growth were essential. The lengths of their videos, viewable here, are considerably longer than the other playlists on this page.Did you notice both economics and ecology have the same prefix, eco- ? It is derived from Greek word οἶκος (oikos) which means house or home. MIT has more than thirty videos in their General Chemistry playlist.
Professor Dave's playlist has more than eighty videos that can be seen here. Khan Academy's playlist contains more than 120 videos which are viewable here. This list contains over 300 videos and was created and compiled by The Organic Chemistry Tutor. New AP & General Chemistry Video Playlist
To this end, we have performed YouTube searches for general chemistry playlists and linked the results to this page. There a far to many videos that are useful for general chemistry instruction to put on this page. Search our website: General Chemistry Tutorials Crash Course Preview
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