The total number of atoms of each element is not changed during a chemical reaction.

The term homologous comes from the Greek word homos which means explain how this meaning relates to homologous sturctures

Answer Choices: A. An acidic solution B. a basic solution C. a neutral solution D. there is no way to tell whether it is An acid or a base.

Which of the following is an example of a synthetic opioid? coffee methadone methamphetamine nicotine

The final step in the hybridization of radioactive DNA and normal DNA is to: A. heat a mixture of the two types of DNA. B. cool a hot mixture of the two types of DNA. C. expose two types of DNA to radiation. D.

Which compound was abundant in Precambrian Earth's oceans, before complex life evolved on Earth? A. dissolved oxygen B. dissolved carbon dioxide C. dissolved methane D. dissolved ammonia

Which two inner planets have water in the form of ice?

Which sentences describe star clusters?

Which of the following is an advantage of nuclear energy over fossil fuels? A. Eliminates the need for mining. B. Uses a renewable energy source. C. Releases less CO2 waste products. D. Releases more CO2 waste products.

A cell with 46 chromosomes inside itsnucleus goes through one round of mitosis and cytokinesis. How manychromosomes are inside each of the two resulting nuclei?

The theory that explains how the earths surface is made up of moving rocky plates is called: A. Supercontinent B. Plate tectonics C. Sea floor spreading D. Continental drift