Winter squash is an excellent source of vitamin A, vitamin C, alpha-carotene and beta-carotene. It is also a very good source of thiamin, vitamin B6, potassium, magnesium, and manganese, and a good source of iron.
Spiders are, for the most part, such generalist feeders that they kill many useful insects as well as many pest species, however because pest species are by their nature more numerous than beneficial species they are still effective. They are of great value to the environment.
Respiratory System in the Jumping Spider. Jumping spiders take in oxygen from the air through their book lungs. Also, they have a tracheal system which transports the oxygen. Having both book lungs and a tracheal system is called a bimodal breathing. Jumping spiders have a pretty advanced respiratory system, when compared to other species of spiders. Diffusion: In all living organisms diffusion occurs. In the jumping spider diffusion occurs in the book lungs.