How do you find the mass number of an atom

Are genes a segment of DNA containing a set of instructions for making a protein?

Rodents can be found in all of the following continents except:

Most countries have outlawed whaling but some countries have few or no laws protecting whales. Why are conservation pushing for worldwide restrictions on whaling. A. Whale oil is desperate needed as fuel as worldwide B.

What are the characteristics of the nuclear membrane?

What may be a symptom of a person whose vien valves are not functioning properly and are causing fluid to flow away from the heart

What is the main function of the large intestine? A. digestion of proteins B. absorption of nutrients C. breaking down complex carbohydrates D. removing water from undigested waste

Which type of environmental scientist is most likely to study how whales are affected by pollution? a. Hydrologist b. Toxicologist c. Ecologist d. Oceanographer

How did Francesco Redi disprove the idea of spontaneous generation? He showed that flies were not produced by meat. He showed that microorganisms are present in air. He showed that microorganisms cause disease. He showed that flies spread disease.

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness