Chromosomes come from genes. All females produce eggs with an X chromosome, and sperm that fertilizes it will have either an X chromosome or a Y chromosome.
Answer:
D) fertilization
Explanation:
Fertilization is the name given to the fusion of male and female gametes. By themselves, female egg cells -- called ova -- and male sperm cells cannot grow and divide. However, once a sperm cell breaks through the egg cell membrane, the genetic material combines and the new organism begins to grow and develop as a living thing.
Answer:
Many people are familiar with hibernation, the winter practice of some mammals such as bears, and even some plants. It is commonly thought that snakes also hibernate because we don’t see them as much in the colder months, but this assumption is mistaken and could lead to unexpected – and likely unwanted – snake run-ins.
Hibernation is the state of very deep sleep where the animals or plants will stay dormant to conserve energy until the cold season passes. For example, bears will often gorge on food to build up their fat stores then go into hibernation because their food source will be very low in the winter months. The hibernation state helps them survive the winter by lowering their body temperature, slowing their heartbeat and breathing, depressing their metabolism, and exerting little to no energy. Their bodies then use up the stored fats to maintain their necessary body processes and to keep them warm through the season.
Unlike mammals, snakes don’t go into full hibernation. Instead, snakes enter a similar state called brumation.
Answer:
water is denser than air and sound waves require a substance to travel through. when the substance is denser, the sound is amplified and carries farther. This excessive noise can be severely damaging to marine life's ears
Explanation: