Answer:
Plain Tap Water
Explanation:
You should find that plain tap water produces a much larger, stable drop of water on top of the penny than the soapy water does. This is because plain tap water has higher surface tension, so the surface is "stronger" and can hold together a larger drop.
It is very important to control the conditions of an experiment because FAILURE TO DO THIS WILL MAKE THE RESULTS OF THE EXPERIMENT INVALID.
A controlled experiment refers to an experiment that is conducted under controlled conditions. Conducting experiments under controlled conditions helps scientists to minimize the changes in all other variables with the exception of the ones been tested.
Answer:
D
Explanation:
One of the reproductive strategies of terrestrial vertebrates is <u>the ability of fertilized eggs to develop away from the body of water.</u>
<em>Water is very important for fertilization in aquatic organisms and one of the biggest challenges posed by migrating to the terrestrial environment is desiccation of the eggs. Terrestrial vertebrates are able to overcome these challenges by making fertilization of eggs internal and the ability of the fertilized eggs to develop away from the body of water.</em>
The correct option is D.
Answer:
Enzymes are proteins that act as biological catalysts, Enzymes speed up chemical reactions that take place in cells.
Explanation:
