Describe the uptake of oxygen by respiring organisms such as arthropods​

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Any sound above what db can cause hearing loss in human beings