The correct answer is D. Hope this helps :)
Gravity increases as mass increases.
Gravity decreases when distance decreases
B. Covalent (Bond) I hope this helps! ^^
Answer:
Farmers have been using selective breeding for improving their crop qualities and producing animals with better characteristics.
improved so that mankind can benefit from it.
Selective breeding is not okay on a bigger level where it might eradicate the natural varieties of plants and animals completely. When done on a larger level, the wild-type traits of plants and animals will change and be removed completely. This will lead to lesser genetic diversity.