PLEASE HELP
What do the arrows in the photo represent ❤️

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation

Use the distance formula to determine weather each pair of segments have the same length