In the last 100 years, which of the following have added excess carbon dioxide to the atmosphere?

a. power plants

b. machinery

c. cars

d. All of the above

Sometimes errors called mutations occur during DNA replication. What are some of the possible consequences of mutations?

Suppose that a population of bacteria triples every hour and starts with 400 bacteria. find an expression for the number n of bacteria after t hours.

Alcoholic beverages are extremely hurtful when it comes into contact with cell membranes. Their chemical nature can destroy the phospholipids that bind it together. Explain how someone who drinks alcohol can be affected on all 5 levels of life.

How would clearing a forest to plant corn affect an enviroment?

A set of ideas that is proposed to explain something is a: theory tissue system statement

What is an unusual property of magnetite?

Which describes the scientific view's order of earth's first living things to the most recent? A. cyanobacteria, hagfish, crocodilians, giant ground sloths B. cyanobacteria, crocodilians, hagfish, giant ground sloths C. cyanobacteria.

At what stage of mitosis does the cell grow and make copies of its hereditary material

A landform that has high elevation and a more or less level surface is a ...

Which of the following contain only prokaryotes? A) Domains Bacteria and Eukarya B) Domains Archaea and Bacteria C) Only Domany Eukarya D) Domains Archaea and Eukarya