6. The following atoms are all variations of the element carbon: 12C, 13C, and 14C due to differing

numbers of neutrons. What are these variations called?

A. Isotopes

B. Polynomials

C. Polymers

D. Isomers

Question 3 4 pts (01.02 MC) A scientist is examining a simple multicellular organism with a nucleus and specialized organelles that was found in a moist environment.

Does every organism have the same number of chromosomes?

If your data led you to conclude that your hypothesis was rejected which of these should you do next

A plants biomass mainly comes mainly from nutrients in the soil that are taken up by the plants roots

From which substances are sedimentary rocks most likely made? Check all that apply. cooled lava melted rock sand particles small pebbles weathered rock

In levels of orginization within an organism what is the order of these words; element, compound, organelle, cell, tissue, organ organ system

Why is fresh water a limited resource? Groundwater is too difficult to access Most water covering Earth is salt water. The supply of water on Earth decreases over time. Too much water is wasted on irrigation

Which sentences describe the differences between photosynthesis and cellular respiration

Compared to most other substances, a great deal of heat is needed to raise the temperature of water by a given amount. This is because water A. is an acid. B. readily forms solutions. C. acts as a buffer. D. has a high specific heat capacity.

Question 1 What is used to classify the layers of the atmosphere? A Differences among temperature altitude, and weather B Differences among altitude, wind speed, and weather C Differences among temperature, air pressure, and density D How far away