Unlike identical twins, fraternal twins

a. result from two eggs fertilized by different sperm.

b. result from the same fertilized egg.

c. are always the same sex.

d. are produced from two identical embryos

How do scientists count a species' population?

In what way might the formation of owl pellets increase an owls chances of survival in an ecosystem

The formula for logistic growth rate is shown above. A population of salmon has a carrying capacity of 2500 in a small fishery. What will occur when the population reaches 3000 for the salmon? A) The population will stabilize at 3000.

Mammals whose young develop in a pouch on the mother's body are called placental mammals, monotremes, marsupials, gymnosperms

What recessive features do you exhibit? what does this mean?

which two of the following are the least dense materials rock, pillow, bottle of soda or a loaf of bread

The food handler should guard against hotspots in cooling units by

Which of the components of the cytoskeleton is much more important to animal cells than to plant cells?

The build-up of toxic materials in the tissues of animals is known as

Deforestation in a sentence