Which is a major mineral that makes up sand?

A. dolomite

B. obsidian

C. calcite

D. quartz

Why must you include the water soluble vitamins in your daily diet?

Recycling solid wastes is an example of ... A) utilizing covercropping techniques B) preventing erosion in a landfill C) eliminating sulfur pollutants in the atmosphere D) conserving natural resources without harming the environment

What kind of a simple machine is an ax blade?

One of the first breakthroughs in biotechnology was the discovery of the gene that makes insulin. What was the first step of this process? A. Scientists used the codon table to find the possible sequence of mRNA B.

How do ukaryotic cells differ from each other

Identify twice substances that can cause changes in DNA

In which of the following cells can more than one nucleus be found? A. An unfertilized egg B. Neuron C. Sertoli cell D. Muscle fibre

1pt Blood is made up of A. nutrients, minerals, fats, and proteins B. oxygen, carbon dioxide, and sugar C. plasma, red blood cells, white blood cells, and platelets D. bone marrow cells and water

One of the first breakthroughs in biotechnology was the discovery of the gene that makes insulin. Part of this process involved scientists making DNA to match each possible sequence of insulin mRNA. What was the next step of this process? A.

Which of these modes of transmission require a bodily opening either natural or artificial?