Answer:
Aluminum
Explanation:
The density of Aluminum is 2.7 g/cm3
We know the volume and mass of the unknown metal, as density is mass/volume: 81g/30cm3 = 2.7 g/cm3 which is the density of Aluminum :)
Answer:
It has a pH of 7, so your answer is therefore B.) 7.
Organisms that eat—or prey on— herbivores are called carnivores. One push, and a trail of dominos falls. During photosynthesis, green plants use energy<span> from the Sun to convert carbon dioxide and water into sugar molecules. The diagram below shows the overall </span>flow<span> of </span>energy<span> through </span>living<span> things.</span>
The answer is A- sperm and egg. gametes are reproductive cells in mammals, so sperm and egg would be the correct.
Answer and Explanation: This is true that theories do change or get replaced overtime. We all know that in any scientific investigation the scientist put forth the theories which are basically the ideas explaining something particular. We also know that the world is experiencing constant changes and those changes could be of Technology or of overall world order so, whenever a scientist gives us the theory, that theory is made according to the situations and environment of that particular time and in future with the passage of time and with the advancement of Technology and other variables, scientist do need to re-evaluate theories. They either make some positive changes keeping in view the changing circumstances of the current situation or discard the theory altogether depending on its nature. The name research itself indicate that scientists research the already searched idea and in that way the New theory which comes after the modification of old theory or altogether the new theory takes place of the old one.
