The most widely used renewable energy source is hydropower. While this has many benefits, it also causes many environmental concerns when the dams get built.
Answer: natural selection
Bile helps with digestion
Answer:
Fraternal twins
Explanation:
Hyperovulation is when a mother drops two or more eggs during a single cycle. Each egg acts individually and can be fertilized by a sperm. If egg A is fertilized by a sperm with Y chromosome and egg B is fertilized by a sperm with an X chromosome. Egg A will be a male child, while egg B will be a female child
