Help.. 12. Two organs that are not part of the digestive system, but that secrete substances into the small intestine to aid digestion, are the liver and the
13. vitamins cannot be stored in fat tissues.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it