What is the main difference between primary and secondary

ecological succession?

What stem cells are capable of only limited differentiation

There are no sponges found in freshwater. True False?

How many people have lost their lives on 9/11?

How do identical twin forms a. two eggs are fertilized by one sperm b. a fertilized egg splits in two c. two eggs are fertilized by two sperm d. two sperm fertilized an egg

In earlier times, animals were put on trial for crimes. true false

Which organism is an autotroph? A) Bear B) Rabbit C) mushroom D) dandelion I think it's a dandelion, but not positive.

How is the sickle-cell allele maintained through natural selection? A. Mosquitoes that pass along the parasite also pass on the recessive alleles. B. Individuals with two recessive alleles have very high rates of reproduction C.

Which natural process is the main cause of the ocean currents shown?

Immediately after putting on a shirt, your skin might feel itchy. However, this perception soon fades due to: a. sensory adaptation b. accommodation c. the increase of transduction d. reduced motor unit recruitment e. reduced receptor amplification

Does fungi have cell walls