what are scientists who study fossils called? (a) astronomers. (b) biologists. (c) geologists. (d) paleontologists.

The experiments conducted by J. J Thompson improved on the accuracy of the atomic model. What did his experiments lead him to conclude?

Calculate the total energy required to change 22 g of ice at - 20 degrees Celsius, to water, with a temperature of 50 degrees Celsius. The heat capacity of ice is 2.03 J/g-C, the heat capacity of water is 4.

sodium chloride is called an electrovalent compound where as carbon dioxide is called covalent compound why

The chemical equation of photosynthesis includes 6O2. What does the small number after the O represent?

What is the Mass if the Density = 7g/mL Volume = 10mL?

Why is it important to reduce coefficients in a balanced equation to the lowest possible whole-number ratio?

Which agent causes sand dunes to form? Ocean waves Gravity The wind carries the sand until it runs into an obstacle Weathering of old rocks in the desert

What does composition mean in science

Which of the following descriptions best describes a solid substance? A. The volume of the substance depends on the container it is in. B. Volume of the substance changes depending on its location. C. The shape of the substance changes often. D.

Which element is present in all amino acids but not necessarily in fats or carbohydrates?