Which of the following equation is balanced

4H2 + O2 - > H2O + O

2H2 + O2 - > 2H2O

H2 + O2 - > H2O

H2 + O2 - > H2O+O2

What two impacts do fossil fuels have on the environment?

If a protozoan is heterotrophic this means they Produce their own food Require sunlight Are harmful to bacteria Obtain energy by consuming other organisms.

if a DNA strand is 48% A-T pairs, what temperature will cause the DNA strand to seperate? %G-C = 100 - 48 = 52

Describe the structure and components of a DNA molecule

What is one of the benefits related to second generation antihistamine administration in older adults? a. They do not impair thinking. b. They reduce the number of falls in clients diagnosed with osteoporosis. c.

Relate tissues to organs and organ systems. Give an example.

Which of the following is an example of a Global Environmental choice? A students deciding to ride bicycles to their school B Nations meeting to discuss the ozone layer C a Town Council considering a new nature Refuge D a family deciding to recycle

What is the wavelenght of a 1-kilohertz (kHz) sound traveling in water

The following are important steps in the process of endochondral ossification. What is the correct order for these events? 1. Enlarged chondrocytes die. 2. Osteoblasts replace calcified cartilage with spongy bone. 3.

Fahd is trying to write a focused scientific question. He writes, "Does the material something is made of affect its density?" How could Fahd's question best be rewritten? Choose all that apply. A.