I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. "RNA" is the other kind of molecule that can act as a catalyst for chemical reactions. I hope that this is the answer that you were looking for and the answer has come to your help.
Trisomy-21 is a mutation that occurs in the gametes where there is an extra pair of chromosomes that causes a child to develop wrongly in the womb
hope that helps
Answer:
Spiral Galaxies, Elliptical Galaxies & Irregular Galaxies
Explanation:
How did galaxies originate? Astronomers believe that after the big bang, the explosion which began the universe 10 billion to 20 billion years ago, gravity began to compress masses of free-floating gas. Two main theories, bottom-up and top-down, explain what happened next. According to bottom-up theories, clusters began to form and assembled together into the larger units we know as galaxies. Top-down theories suggest that galaxies formed first, and the stars and other objects within them were subsequently produced. They categorized different galaxies to maintain their tests from the other galaxies.
The correct answer is D. Sunning themselves
Sunning or sunbathing is a method used by the organism to raise its body temperature.
The options changes in blood flow, panting, and sweating are means of the endotherms to cool their body temperature.