A skeleton forming outside the animal's body is a (n)

a. endoskeleton.

b. exoskeleton.

c. notochord.

d. vertebrate

In sexual reproduction offsprings are genetically different from the parnets. this is because?

Genes are expressed sequences of nucleotides that directly code for the transcription of mRNA true or false

Atoms that are heavier than iron are generally produced by:

Are the layers of rock above and below the coal older or younger?

All of the following are functions of the central nervous system except

Sustainable use is often defined as the use of natural resources at a rate that meets the needs of the present human population but which also allows future generations to use the resource to meet their needs.

An example of a properly functioning homeostatic control system is seen when

Scientists have worked on the structure of DNA and one of their revelations is the antiparallel arrangement of DNA strands. Which of the following explanations does not go in accordance with the above statement?

About two third of the cell is composed of water. what is the name of the process in which water moves into or out of the cell membrane to maintain homeostasis

The ratio of output work to input work expressed as a percent is the blank of a machine.