Besides providing food and lumber some trees providing food and lumber some trees are valuable natural resources because they contain substances that make what

Medicines and other therapeutic products, oxygen et cetera.

Explanation:

Forest are the source of food, lumber, and many more natural resources. It has a wide variety of plants and animal species that is very beneficial to both the animals and human beings.

Forests have abundant number of trees that can be used for the therapeutic purposes. Forests provides us with oxygen which is most important component of the all the living components.

There are many emerging diseases whose treatment is possible with the compounds found in plants so along with food and lumber plants can also be used as a source of medication.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.