What does darwin‘s theory suggest about living and extinct species? how did this tie with darwin’s ideas about common descent?

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Which of the following are the functions of the skeletal system? blood cell production in soft marrow tissues and mineral reserves largest organ of the body for defense and support vitamin d production and pumping blood through vessels voluntary movement and contractile movement

How is the carbon cycle related to global warming ?