Which of the following describes a relationship of predator-prey? a oxpecker birds eat parasitic ticks off the backs of zebras b a moray eel eats a fish swimming by c a tick attaches itself to the inside leg of a deer d birds feed off the insects that are stirred up from the grasses as cattle move through

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.