25 POINTS!
Which of the following are two examples of ways that objects can have potential energy?

A boulder that is falling after being pushed off a cliff.

A Iron nail as it move towards a magnet.

A pebble in a slingshot before it has been shot.

A pebble traveling as it is shot with a slingshot.

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by