Heavier female black bears produce more offspring. Which statement describes a genetic factor that might negatively affect a female black bear's reproductive success?

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .