How many valence electrons does a carbon atom have?

two

four

six

During science class, Jose and Richie set up the experiment you see above. Sugar cubes were used for rocks. Colored water in a dropper was used to model rain water. As the boys dropped water on the sugar cubes, they dissolved.

Is a catfish a decomposer

Complete the sentence to explain how organisms develop in a changing environment. occur because beneficial traits exist in a gene pool, and makes these traits more prevalent in the population.

Can something alive be only unicellular? why or why not?

Activities of the digestive system generally increase when it is stimulated by parasympathetic impulses. sensory impulses. somatic impulses. sympathetic impulses.

True or false. The highlighted bone articulates with the ulna. True or false. The highlighted bone articulates with the ulna. FALSE TRUE

The savannah (a) is a hybrid domestic cat breed. it is the result of selectively breeding domestic cats with african servals (be) in order to produce the signature color markings and large size.

Which statement about solar eclipses is false? Select one: a. They occur during the full moon phase. b. They last only a few minutes. c. They may be partial or total eclipses. d. They are rare

Is there more lymphoid tissue in adults than in children?

Which is true regarding all X-linked disorders? Group of answer choices they result in a longer lifespan they are caused by mutations of the X chromosome they are linked to an unknown chromosome they are disorders that affect only women