Answer:
haemoglobin
Explanation:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body
Answer:
Plants have evolved several adaptations to life on land, including embryo retention, stomata, and vascular tissue
Firstly, we need to know what a healthy ecosystem is. When an ecosystem is healthy, this would mean that it could supply all the resources that all organisms present in it and with all the resources, there is diversity. Old growth forests are considered healthy because of this reason. These forests remain untouched and had remained in providing the resources needed for the organisms present in it.
Answer: Enzymes are organic bio-molecules that catalyze the chemical reactions in biological system. Similar to catalyst, an enzyme accelerates the rate of a chemical reaction and it is neither consumed nor changed in the reaction. Therefore, the enzymes are also called bio-catalysts.
Explanation:
