Answer:
46 chromosomes
or 23 pair of chromosomes but as u asked single it will be 46 chromosomes
Mutations are spontaneous and occur at random however there are some mutagenic agents which increase the chance of this happening such as radiation exposure. If it is a point shift mutation then only a few bases on the dna sequence are changed so only changes a few of the amino acids in that chain (such as inversion of a base). If its a frame shift then the base sequence is altered so much so that every amino acid from after that changes (such as deletion of a base) which can create things such as cri-du-chat syndrome which results from a piece of chromosome 5 is missing. Hope this helps:)
I think the most suitable answer is carbohydrates as it can be monosaccharide, disaccharide or polysaccharide.
Land and water are the two natural resources will be most affected as people try to meet the growing demand for food.
Meeting the growing demand for food will involve planting more food crops and this will requires more lands. The planted crops will also need water in order to grow very well. Thus, more land and water will be needed to produce more food.