How much of Earth's water is located in the oceans?
O A. 70%
OB. 80%
C. 55%
D. 95%

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

What is used as a template during replication? a- mrna b- trna c- rrna d- dna