How is a scientific theory developed?

Why can twins look different

The change in seasonal temperature causes the supply of nutrients to move in a lake. Which best describes the movement of nutrients? A. deposition of sediments B. erosion of sediments C. lake turnover

Which function of human blood includes the other three

Which change to one of the kits would make it useful for modeling proteins?

In humans, how many alleles of genes found on the x chromosome do male have?

When you eat a bag of cookies, your blood sugar level increases. As blood sugar levels rise, insulin levels increase to move the sugar into the cells and lower the blood sugar level. As the blood sugar level drops, so does the level of insulin.

Mendel's law of independent assortment has its basis in which of the following events of meiosis I?

Describe a procedure humans may have used to produce broccoli, which has small flowers and thick stems?

In the United States, mothers who live in poverty generally have babies with lower birthweight than those who do not live in poverty. The mean birthweight for babies born in the U. S. to mothers living in poverty is approximately 2800 grams.

Hypothesis on whether radiation has the same impact on coastal, forest, and desert areas