Answer in about four to five sentences. 1. List the properties of synthetic fibres. 2. Explain how a polar bear is adapted to living in the Arctic region. 3. Distinguish between taproot and fibrous root. 4. Explain the structure of the vertebral column. 5. Why does the body need a regular supply of clean water?
Answers
Answer:
1) Synthetic fibres are cheaper than natural fibre.
Synthetic fibres are stronger than natural fibre.
Synthetic fibres are more durable than natural fibre.
Synthetic fabrics are dried up in less time.
Synthetic fibres are easy to maintain and wash.
2) The polar bear
thick layers of fat and fur - for insulation against the cold. a small surface area to volume ratio - to minimise heat loss. a greasy coat that sheds water after swimming - to help reduce heat loss. large feet - to distribute their load and increase grip on the ice.
3) umm idk
4) Vertebrae: The spine has 33 stacked vertebrae (small bones) that form the spinal canal. The spinal canal is a tunnel that houses the spinal cord and nerves, protecting them from injury. Most vertebrae move to allow for a range of motion. The lowest vertebrae (sacrum and coccyx) are fused together and don't move
5) Humans need to be adequately hydrated for their physiological systems to function. Additionally, water helps maintain organ health and allows the blood to maintain the consistency it requires to flow freely and transport oxygen and nutrients to every cell of the body.