Answers: 1
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 21:20
25. what does meiosis create? haploids or diploid? somatic cells or gametes?
Answers: 2
Biology, 22.06.2019 06:30
Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide
Answers: 2
Biology, 22.06.2019 13:20
There are only about 250,000 known fossil species. true or false
Answers: 2
What kind of organisms usually make up a pioneer community?...
Mathematics, 14.09.2019 07:30
Chemistry, 14.09.2019 07:30