Explain four disadavantages of using fossil fuels

Which stars can be smaller than the sun? select all that apply. A) neutron stars B) red giant C) white dwarf D) main sequence star

What would happen to a species if they no longer reproduced?

A male body contains 5 to 6 liters of blood, whereas a female body contains 4 to 5 liters. why do you think there is a difference between the two? assuming the above is true for your gender (5.5l in males and 4.

Calculate the wavelength of a photon of energy 5.518 * 10-26 joules. (Planck's constant is 6.626 * 10-34 joule seconds, the speed of light is 2.998 * 108 m/s)

When people exercise, their body cells build up more waste quickly. Which two body systems work together to remove these wastes from their cells?

Examples of archaebacteria examples of archaebacteria

What are the basic units of most biomolecules contain

What is alwasy true about a binary bond

Which of these examples demonstrates metabolism? A. A person eats a large dinner for digestion and energy. B. A human's skin has the ability to tan in the sun. C. A person puts on socks because his feet are cold. D.

What structure in the fetal heart allows for mixing of blood between the two atria?