What holds the two strands of DNA molecules to each other

Mrs. b is a 30-year-old african american woman with two children. she is employed at a workplace that does not provide the employees with health insurance. mrs. b and her children make frequent visits to the emergency room for healthcare services.

Phospholipids make up most of the lipid present both in the body and in food. a. True b. False

Two bones that form the sides and top of the cranium are the:

Which of these is most likely to have a harmful effect on water quality? a. having water laws and regulations b. using chemical indicators to check water quality c. treating sewage to kill pathogens d. letting pollutants wash out to sea

Write about digestion in human

How does the human heart organization relate to cells? To organ systems?

Why could a diet low in carbohydrates be dangerous?

What is a pathogen free environment

which object would take the most force to hold up in the air? A. a bus B. a chair C. a balloon D. a nail

In a ecological pyramid, what happens to energy, biomass and number of species as you move up? Why?