Answer:
List the features of gas exchange surfaces in animals.
1)They are moist to prevent the cells from drying and to allow gases to dissolve;
2)They have a large surface area , so that a lot of gas can diffuse across at the same time;
3)They have a high concentration gradient - maintained by the movement of air & blood.
Explanation: Rivalry
There is safety in numbers, and with that, they can run together more often without the fear of being attacked, and must push themselves to match others, therefor getting fit
Answer:
Based on the first study it is evident that the ecologists are looking for functional diversity as they are making a note of different functions performed by a distinct kind of species found on different plots.
On the other hand, based on the second study it is evident that the ecologists are studying the species diversity as with the assistance of different wavelengths of light reflected by the vegetation, they are differentiating between the vegetation found in different parts of the continent.
The biodiversity helps humans in different ways, that is, by supporting the society in which they live and by maintaining a healthy biosphere. The biodiversity found around helps in the procedure of dead species decomposition, they offer humans with nutritious food, and also acts as natural sieves and clean the water for consumption. Hence, the correct options are 1, 2, and 3.
