Viewed through a microscope, a sample of natural water is seen to contain a cluster of sphere-shaped bacteria, but no rod-shaped or spiral-shaped bacteria. which of the following conclusions is best supported by this observation?

The natural water sample contains only one type of bacteria.

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.