Objectivesquiz: rates of nuclear decay 10 nuclear chemistrywhich statement describes why radiocarbon dating has an upward limit of 50,000 years? a. too little carbon-14 remales in objects older than that. b. too few half-lives passed during that time. c. no carbon-14 existed on earth before that time.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems