If you found a human skeleton that you believe is approximately 20,000 years old, which radioisotope would you use to date it?

235U

238U

14C

40K

Pasteur encouraged doctors to sanitize their hands and boil or sterilize equipment before surgery. Before this, few doctors or their assistants did this and many patients got sicker and even died because of the non-sterile conditions.

Why single ovum is produced by oogenesis?

Earths energy sources include both renewable and no renewable resources name a time least three sources o energy that could be used

What is the role of centrosomes in mitosis?

What does the letter in a chemical formula represent

What organisms are capable of photosynthesis?

Near the shore, friction between the ocean floor and the water causes waves to ...

Explain the breathing process in terms of pressure and volume changes.

Animal waste decay by the action of bacteria witch create

What is the chance that a human zygote will receive one X and one Y sex chromosome during fertilization?