Exchange of oxygen and carbon dioxide in the lungs uses which mode of cellular transport?
a
e...
Answers: 2
Biology, 21.06.2019 18:40
The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?
Answers: 1
Biology, 21.06.2019 20:30
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
Answers: 2
Biology, 22.06.2019 06:30
Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
Answers: 1
Biology, 22.06.2019 13:00
Blank is a rock with a find dark texture that makes up the oceanic crust
Answers: 1
Health, 03.02.2021 01:00
History, 03.02.2021 01:00
Physics, 03.02.2021 01:00
Mathematics, 03.02.2021 01:00
Mathematics, 03.02.2021 01:00
History, 03.02.2021 01:00
Mathematics, 03.02.2021 01:00
Mathematics, 03.02.2021 01:00
Mathematics, 03.02.2021 01:00
English, 03.02.2021 01:00
History, 03.02.2021 01:00
History, 03.02.2021 01:00