⚠️⚠️⚠️⚠️Hellppp⚠️⚠️⚠️⚠️ The diagram below shows a basic steps involved in respiration glucose in a carbohydrate what we act with glucose in order to complete the steps

A oxygen
B carbon dioxide
C nitrogen
D hydrogen

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above