Which heart sound occurs at the end of the ejection phase and at the start of ventricular relaxation?

When analyzing tree rings, what do scientists assume a thin ring indicates?

What is the approximate time of death of the body temperature is 29.4 degrees celsius

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