One hypothesis about the extinction of dinosaurs is that a meteor hit the earth causing an explosion so powerful that blocked out the sun. consider the model above and explain why would this have caused a mass extinction

Explain why it is important that scientists only test one independent variable at a time in an experiment.

What is the difference between a compound eye and and a human eye

Which of the following correctly organizes these genetic terms in order from smallest to largest? A. chromosome, gene, nucleotide, DNA B. nucleotide, gene, DNA, chromosome C. DNA, nucleotide, gene, chromosome D. DNA, nucleotide, chromosome, gene

The four groups of organic compounds found living things are carbohydrates, lipids, nucleic acids

What sort of analysis would this state meant produce

Your family owns a bakery and has kept the same "family recipe" for bread for over 50 years. Unfortunately, customers have been complaining that your bread is too heavy and dense.

If your heart beating is too fast at rest what is ponyential problem you may have?

what are the dificulties faced by the people in the rural areas to get portable water. explain in easy tearms

What is the significance of tropism in plant life?

If this site was made by students shouldn't it be a non-profit type thing?