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2 years ago

Why are catfish and carp found at the mouth of a river, while trout are found nearer the source?

2 answers:

8 0

<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>

guajiro [1.7K]2 years ago

7 0

Answer:

The correct reason would be "the levels of dissolved oxygen at the mouth of the river and at the source of the river".

The mouth of the river is the region where it flows into the ocean, lake, another river, reservoir, sea et cetera. The level of dissolved oxygen in this region is too low to support great biodiversity.

Organisms like catfish and carp can survive here due to their low oxygen demand. For example, catfish can survive in water with an oxygen content of 2.5 parts per million.

In contrast, the level of dissolved oxygen is higher at the source of the river. Organisms like trout are found here due to their high oxygen need. For example, rainbow trout require minimum 5-6 parts per million dissolved oxygen for its survival.

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1 year ago

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Determine the median value for foot width for males and for females. Describe in complete sentences the method you used to deter

Ipatiy [6.2K]

Answer:

This question is incomplete because of the absence of the data referred to in the question

Explanation:

This question is incomplete but the data referred to in the question is attached below

In order to determine the median value of any set of data, the data is first of all rearranged chronologically (ascending) and then the middle value is picked if the number of data is odd but if the number of data is even, the two middle values are added together and then divided by two to get the median.

From the data provided, the values (which are 10 in number) can be arranged as shown below (with the median values in bold)

Females: 5, 7, 7, 7.5, 7.5, 7.8, 7.8, 8, 8, 17

Males: 4.5, 7.5, 9, 9, 9.2, 9.3, 10, 10, 10.5, 13

Since the number of data is even, the two middle numbers (in bold) shall be added together and then divided to get the median as shown below

The median value for the females foot width is = 7.5 + 7.8/2 = 7.65 cm

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1 year ago

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Answer: The other ova become polar bodies.

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So only 1 egg is made and the rest are polar bodies that get rid of extra DNA and then die by apoptosis.

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2 years ago

specific example of a conflict that might occur due to individualism and collectivism. Explain briefly.

s2008m [1.1K]

Answer:

The very definitions of ‘individualism’ and ‘collectivism’ are, by themselves, ideological definitions.

Reality shows us that these two ‘ideologies’ are pragmatically practiced, with one or the other being the policy-making ideology. We have already seen the results of

collectivism, as gruesomely displayed during the 75 year life of the ‘late’ Soviet Union, and the CONTINUING forms of that totalitarian collectivism in the People’s Republic of China and North Korea.

Tiananmen Square in China was the classic confrontation conflict

of the individual dissidents against the tyrannical Chinese State.

The United States, Australia, and some of the European states tend to exhibit MORE individualism by virtue of their democratic forms of government. There is NO ‘ pure individualism’ anywhere on Earth, as all national populations have their civic codes and regulations governing individual behavior.

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1 year ago