Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart rate
and then runs up the bleachers 10 times. Each time he reaches the top, he records his heartrate then rests 20 minutes
Which is involved in Justin's experiment?
O
O
O
O
replication
repetition
both repetition and replication
neither repetition nor replication

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

Photosynthesis converts solar energy into what type of energy?

As a result of these processes the single celled organism accomplishes