Answer:
1a. To collect and remove waste materials from the body.
2c. Urinary bladder.
3d. Urea
4c. Remove urea and excess water.
Explanation:
The main function of our excretory system is to collect and remove waste materials from our body because these waste materials are toxic and cause damaged our body. Urinary bladder is the organ that stores urine. Urea is present in the urine under normal conditions of the body which is waste material produced our body. The main function of kidney is to remove urea and excess water from our body.
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In bacteria, they play an important role in bacterial multicellularity. Cellulose and chitin are examples of structural polysaccharides. Cellulose is used in the cell walls of plants and other organisms, and is said to be the most abundant organic molecule on Earth.
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Multi cellular is mad up of multiple cells and uni cellular is made up of just one
B) Rust, because it has tightly arranged hyphae
Each year over 5 million collisions occur.
