The answer to you question in true.
Answer:
Yes and no
Explanation:
The water we drink today is the same the dinosaurs drank because no new water has been created since. However, the cycling of water in the planet requires for it to travel from one sink to another in a process that may last millions of years. For example, the water the dinosaurs drank may have sank to the bottom of the ocean and remain there for millions of years and thus would technically not be the same that we drink today.
C. a Y chromosome from his father
This is because boys have one X and one Y chromosome, while girls have 2 X's, so the Y must come from the father.
Hope this helps :D
Answer:
A small change in our ecosystem could forever impact the whole web. For example, if bees were to go extinct, then flowers wouldn't be able to reproduce (since bees fertilize the flowers). Meaning the flowers would die out. And a lot of living things, including humans, depend on bees. Or let's say that a sharks were to go extinct. They play a major role in our ecosystem, because they eat fish and other sea creatures. The prey would then grow in population. Which would lead to a disaster. So in short terms, every creature in the ecosystem is vital to maintain the balance. I hope this helps!! :)
Answer:
Yes, the statement is true.
Explanation:
Different substances requires different amount of heat because every materials has its own specific heat capacity. Heat capacity is the amount of heat required to increase its temperature by 1 degree. Different substances have different types of bonds due to which they required different amount of heat energy for its breaking.
For example, heat requirement of water is different from glucose because they are made of different substances.