Some farmers leave a strip of land around the edge of each field which they do not spray with chemicals. Suggest 1 reason why this will lead to an increase in the number of partridges on these farms. I have there are no caterpillars on the oak tree in the winter what else.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.