To gather data on instantaneous speed via experiment, we can use limits i.e. using limits in the formula for example 1 second and 2 second interval with particular difference of distance traveled by object during this interval. for example if distance traveled after 2 second is 60m and after one second is 35m, then the speed will be the ratio of differences of distances and time intervals.
B because the plant uses oxygen from water
We breathe out carbon dioxide to get into the plants and u know they give oxygen and water normally comes to the plant by rain or by us watering plants.
