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svetlana [45]
2 years ago
6

Current studies on frogs and wildlife indicate that hormonally active agents (HAAs) are __________. a. found in insecticides and

should be removed b. found in radionuclides in parent rock materials c. abnormalities associated with developmental and reproductive systems d. causing lung cancer e. creating new forms of lizards
Biology
1 answer:
melomori [17]2 years ago
3 0

The right answer is A.

The term "hormonally active agent" (or endocrine disruptor) refers to any molecule or compound chemical agent, xenobiotic having hormono-mimetic properties and described as a cause of physiological abnormalities, and in particular reproductive abnormalities. Some examples are PCB, TCDD, DDT. Some of them were used as pesticides and are now banned for use. Their traces always exist at the soil level due to their persistence.

These agents are most often associated with breast cancer.

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What would happen to life on earth if the rates of photosynthesis and cellular respiration in all phototrophs were equal?
Reptile [31]

Answer:

When the level of release of carbon dioxide during respiration and use of carbon dioxide during photosynthesis this results in a compensation point. At compensation point the net available carbon dioxide to phototrophs becomes  zero. As, carbon dioxide is the chief ingredient for photosynthetic products like glucose and oxygen. These products are used up during the process of respiration. When the rates of two processes photosynthesis and respiration becomes equal. Phototrophic organisms will not be able to compensate for lack of carbon dioxide levels. Phototrophs will not be able to produce their food in the form of glucose and hence will not be able to respire too. This will result in lack of overall available food from phototrophs and lack of available oxygen for respiration. This will result in decline of organisms on earth.

4 0
2 years ago
Read 2 more answers
The map shows the distribution of wild boars in the United States (shaded area).
fgiga [73]

Answer:

Regarding wild boar, the fact that is best supported by the evidence provided is wild boars have established successfully mostly in areas with warm climates.

Explanation:

The wild boar (Sus scrofa) is a mammal from Africa, whose capacity to adapt to the environment is high. However, it is usually found in warm climates where it has a good supply of water and food.

According to the description of its distribution on the map, the states where it is found —predominantly Texas, California and Florida— verify the fact that they can be found mostly in warm climates, where they have found an ideal environment for their development..

About the other options:

  • <u><em>Wild boars were brought to the United States by humans</em></u><em>.  This is true, but it is not a fact that can be deduced from the information on the map.</em>
  • <u><em>Wild boars have quickly spread through the United States</em></u><em>.  The map does not show this information.</em>
  • <u><em>Wild boars have a high reproductive rate and no natural predators</em></u><em>. The map does not show this information.</em>
4 0
2 years ago
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Martin is studying sucrase activity. He added sucrose solution + sucrase solution + buffer of pH 5.6 in two tubes. He incubated
lukranit [14]
<span>B, enzymes will denature at that temperature. Sucrase has an optimal temperature of about 37 degrees celsius so 1000 would definitely be too high for them to work.</span>
3 0
2 years ago
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19. If a scientist needs to use a large dataset to explore how corn grows in different soils, how would this data be classified?
Illusion [34]

<u>ANSWER:</u>

The correct option is B- Qualitative.

<u>EXPLANATION:</u>

When the growth of corn has to be recorded, the quality of the corn grown in different soils needs to be recorded. Qualitative methods are best used to classify quality of anything.

Qualitative data basically is non-numerical data which in the case of corns can be the length of the corn plant, the sweetness of the corn kernel or the hardness or softness of the corn. This data cannot be recorded using numerical values and so other methods of data recording cannot be used.

7 0
2 years ago
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7. Mrs. Everhart developed the theory that all bulldogs are great pets. After all her bulldog Meatball is a
Leno4ka [110]

Answer:

No it is not a scientific theory.

Explanation:

An explanation of any aspect of the natural phenomenon of the world that can be tested several times and well supported by the evidence, and follows the scientific method. Furthermore known as scientific theory.

Presently, a logical hypothesis must meet a few rules, and one of those is that it must be upheld by a few (and free) strands of proof.  

For this situation, we have just one hypothesis, that bulldogs are great pet and Meatball is great among bulldogs, and it isn't sufficient, at that point it can not be a scientific theory.

8 0
2 years ago
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