Which of the following is NOT a step in the evolution of a star?

1. supergiant

2. red dwarf

3. supernova

4. neutron star

Which is the most easiestanimal to research about?

Two of the 20 commonly occurring amino acids contain a sulfur atom. Identify the most direct source of the sulfur atom in these amino acids in humans. A. Coenzyme B. A Tetrahydrofolate C. Biotin D. Homocysteine E. glutathione

What types of organisms produce sexually

Why do warmer and wetter biomes have higher net primary productivity

What are the chemical and physical properties of minerals?

How many chromosomes do humans have? how many copies in normal cells? How many pairs? How many copies in sex cells?

How many times has blastopore fate changed over the course of evolution? -o times -1 time -2 times - multiple times

What is unique about the water near Antarctica? How does it drive global ocean circulation?

A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain injury. Which part of the brain is affected? A. Cerebellum B.

In natural selection what determines which color grey or green is advantageous