Distinguish between a trace element and an essential element. Give an example of each.

True or false a factor can change in an experiment is called a variable

A bakery makes 640 muffins every day. Which equation shows how to find the number of muffins the bakery makes in a week?

What is mitosis and how does it affect change

Sharks have existed on Earth for centuries, even thousands of years with very little change to their structure. Why do you think that is? Defend your answer.

Which statement is correct? Hent is correct The number of electrons of a neutral atom always equals the number of protons. The number of neutrons always equals the number of protons. The number of neutrons always equals the number of electrons.

Which salt concentration served as the experimental control lab?

What technique uses a co-contraction of global muscles to enhance global trunk stability?

Sonya had leukemia as a child and had to undergo numerous bouts of chemotherapy. The chemotherapy always made her nauseous. As she underwent a year of treatment, the waiting room started to make her nauseous. The chemotherapy is th

What is butterfly sanctuary?

How does the structure of a chloroplast enable it to build up a concentration gradient of protons?