Answer:
Explanation:
The urinary bladder is a flexible sac that can expand and contract and that holds urine.
Urea is excreted mainly by birds and it happens to be the main chemical in urine, without the water in it, the birds excrete just solid droppings instead of as a liquid.
Now, birds physiology is such that they have only one opening to get rid of their (solid) waste and they do not have a bladder.
Altering the amount of nitrogen that is stored in the biosphere.
The mutation occurs during meiosis that produces sperm cell and egg cell or possibly both. The chromosomal mutation when a child is born it involves the long segments of DNA that can cause not likely good to the child it may be a deletion, insertion, and inversion of the DNA.
Weathering is a destructive force because is moves and breaks up peices of rock and dirt.