The base of an adenine molecule is made of ribose sugar molecules
First, he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then, he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance A is a catalyst.
Hey!
The correct answers for the blanks that I can answer (as a third-person answerer) are as follows:
*No, some collisions do not cause reactions due to a lack of energy or ability to properly collide.
*Speed
*A change in temperature of the bicarbonate reaction may lead to a quicker reaction with CO2-producing molecules.
I hope I helped!
Feel free to leave a comment down below if you need any more assistance or if I skipped any sections of the prompt. I will gladly help you with anything! :)
Answer:
Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.
Explanation:
Answer:
Index fossils
Explanation:
The index fossils are the fossils that come in very handy for the geologists when it comes to identifying or dating rock samples or other fossils. The reason for this is that the index fossils have already been dated. They are fossils that are very commonly found, wide dispersed, are easy to be identified, and are limited to only a certain geological period. These characteristics make them an excellent indicator for the dating of the rock layers in which they are found, or the fossils found in the same layers with them, without conducting further examinations.
