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saveliy_v [14]
3 years ago
11

Why is runoff in rivers and the ocean such a serious problem?

Biology
2 answers:
scZoUnD [109]3 years ago
4 0

Answer:

Explanation:

The main danger resulting from ocean contamination from runoff is the pervasive impact upon the food chain. ... Rivers are ecosystems that many communities rely upon for food and drinking water. Contamination makes it dangerous to eat fish that contain PCBs, heavy metals, mercury or other chemicals.

musickatia [10]3 years ago
4 0

Answer:

The main danger resulting from ocean contamination from runoff is the pervasive impact upon the food chain. Chemical contaminants do not just poison or contaminate the flesh of fish and large sea creatures: but also smaller animals eaten by fish, and the plankton eaten by the smallest sea creatures.

Explanation:

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Amanda is a three-year-old who has a condition that is characterized by the inability of her pancreas to produce cholecystokinin
Mariulka [41]

Answer:

The correct answer to fill in the blank is: has trouble digesting food.

Explanation:

Cholecystokinin (commonly abbreviated as CCK) is a hormone produced in the gastrointestinal system with <u>the function to stimulate the release of digestive enzymes from the pancreas and bile from the gallbladder in order to help with the digestion of fats and proteins</u>.

If Amanda can't produce cholecystokinin, she will have trouble digesting her food.

5 0
3 years ago
A doctor tells her nursing students that it is important to monitor patients' blood pressure when they are receiving verapamil (
FrozenT [24]
Calcium channel blockers inhibit the movement of calcium ions from the interstitial fluid into cardiac and smooth muscle cells. This would cause a decrease in heart rate, stroke volume, and cardiac output. These in turn would lower blood pressure. In addition, the calcium channel blockers would also inhibit contraction of the smooth muscle in the wall of blood vessels, causing them to get wider and thus also lower blood pressure. Because both heart and smooth muscle cells are inhibited by verapamil, its effects on blood pressure are particularly potent.
8 0
3 years ago
Read 2 more answers
The common edible frog of Europe is a hybrid between two species, Rana lessonae and Rana ridibunda. The hybrids have a wide dist
Bond [772]
<h2>Postzygotic isolation </h2>

Explanation:

In the given information of edible frog both male and female hybrids exist, but when they mate among themselves, they cannot successfully produce offspring which defines that postzygotic isolation exists between the two frog species

  • Postzygotic isolation prevents the formation of fertile offspring
  • Before the postzygotic isolation can happen, there must be an offspring born from a male and female of two different species
  • This means there were no prezygotic isolations, such as the fitting together of the sex organs or incompatibility of the gametes or differences in mating rituals or locations, that kept the species in reproductive isolation    
  • The offspring of two different species known as a hybrid is not always viable
  • Sometimes, they will self-abort before being born and other times, they will be sickly or weak as they develop                          
4 0
3 years ago
Help me out plz!!!!!
LiRa [457]
Dominant is always denoted by capital letters. Recessive is always denoted by lowercase letters. Homozygous refers to both alleles of the trait being the same. Heterozygous means both alleles of the trait are different.

Homozygous Dominant:
SS, BB

Heterozygous:
Ss, Bb

Homozygous Recessive:
ss, bb
6 0
4 years ago
Which compound is the strongest acid? H2S HBr Li2O LiBr
Lunna [17]

Answer:

HBr

Explanation:

As per the given options, HBr could be considered the strongest acid and the strength of its bond that makes it the strongest acid.  This acid is highly precarious and toxic in comparison to other acids. It is so strong that <u>it can immediately disunite and concedes its protons in suspension</u> later. It is also <em><u>strong as it gets ionized completely in an aqueous solution and also due to the hydronium ions formation on suspension</u></em>. The other compounds do not do so.

4 0
3 years ago
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