How do identical twins form?

A. A fertilized egg splits in two.

B. Two eggs are fertilized by one sperm.

c. Two eggs are fertilized by two sperm.

D. Two sperm fertilize an egg

Suppose that the accepted anatomical position is to have the palm facing backward. and how would this new position change your descrition of the palm and thumps

If you take 40 pounds of luggage with you on a vacation and you buy 10 pounds of souvenirs for your family (because you're really nice), do those extra souvenirs change the density of your luggage? If the density does change, how does this happen?

Which statement describes the manner in which an herbivore, such as a deer, gets and uses energy?

When analyzing data, which does the scientist look for

What is the term for the particles of light that provide the energy needed for photosynthesis?

How many atoms lined up side by side would equal the thickness of a book page?

If an ambulance hits someone on the road while transporting someone to a hospital, do they bring that person with them too?

Cell biologists have introduced radioactively labeled carbohydrates, fats, and amino acids to living cells, allowed time for cell metabolism, and then placed the cells in a blender and separated out the various cell organelles from the cytoplasm.

Increased production of goods makes our lives more comfortable, but causes an increase in the demand for energy and other resources. One negative impact of this situation on ecosystems is an increase in

One of the most common causes of pneumonia is Streptococcus pneumoniae, a gram-positive bacterium. Surrounding the bacterium is a thick structural component layer known as a capsule.