<span>Catfish and carp require less oxygen than trout. The mouth of a river usually has less oxygen and the area closer to the source has more oxygen, so since catfish and trout require more oxygen they typically are found at the source.</span>
Answer:
Explanation:Twenty fruit flies are placed in each of four glass tubes. The tubes are sealed. Tubes I and II are partially covered with black paper; Tubes III and IV are not covered. The tubes are placed as shown. Then they are exposed to blue light for five minutes. The number of flies in the uncovered part of each tube is shown in the drawing.
These data show that these flies respond to (respond means move to or away from):
Two reasons Eugleoids are considered to be animal-like is because they can move from one place to another, and are heterotrophic (consumes food made by other organisms) or >> reproduces by fission << could be another option.
If lions attack the slowest animal in a herd, it is beneficial to the herd in the following ways:
1.) Evolutionarily, the faster herd members survive and breed, increasing the speed of the offspring and guaranteeing better survival for the future population.
2.) The lions focus on the straggling animal, allowing the rest of the herd to escape.
3.) The death of one herd member ensures the survival of many more.
