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adoni [48]
3 years ago
9

What causes a ducks feathers to repeal water

Biology
1 answer:
belka [17]3 years ago
5 0

Answer:

Ducks have a special gland positioned near their tails, called the preen gland. This gland produces an oil, which ducks rub over their feathers with their beaks to maintain their waterproof effect. This oil creates a protective barrier that stops feathers becoming waterlogged.

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Please help ASAP please, I can't answer these questions please help
Soloha48 [4]

Answer: Sea walnuts are marine invertebrates. They belong to the genus Mnemiopsis.

Explanation:

These animals have stinging tentacles like jelly fish and they often cast up or come to the sea shores where if they come in contact with humans can harm them by stinging.

The barrier if kept along the side of the sea shore and not allowing humans to reach to the shore can help in preventing the harm from these animals. The introduction of the predatory animals in the sea can also help in reducing their population.

The three benefits for removing the sea walnut:

1. The population of other species will increase as sea walnut is an invasive species.

2. The balance of the marine ecosystem can be maintained.

3. Humans can be protected from the harm caused by these animals.

8 0
3 years ago
Question 9 (1 point)
Dimas [21]

Answer:

True

Explanation:

It is true as in Mendel's law of inheritance

7 0
3 years ago
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Bats have oversized ears, which helps the bats use sound waves to detect the motion of their prey. Which example of the characte
lesantik [10]

Answer:

echolocation

it sends waves for them to see around them.

Explanation:

3 0
3 years ago
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How many different genotypes are possible from a cross between the parents RRYy and rrYY?
guapka [62]

Answer:

1 genotype is possible

RrYy

3 0
3 years ago
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Which of the following represents the correct pathway of the egg after leaving the ovary and entering the uterine tube?
Hoochie [10]

<u>Answer</u>: Infundibulum, ampulla, isthmus, uterus.

<u>Explanation</u>:

  • The ovary produces the egg and, it releases one unfertilized egg every month.
  • The egg then travels through the fallopian tube to the uterus.
  • The fallopian tube consists of three parts:

1. <em>Infundibulum</em>- it is the most distal portion of the fallopian tube which receives the egg coming out of the ovary.

2. <em>Ampulla</em>- This is the next portion of the fallopian tube which is ciliated and is the site of fertilisation of the egg.

3. <em>Isthmus</em>- it is also a ciliated region which controls the transport of both sperm and the embryo.

  • Finally, after passing through the isthmus the fertilized egg reaches the uterus where implantation takes place.
  • <em>So the journey of the egg from the ovary to uterus follows the pathway, ovary---> infundibulum--->ampulla--->isthmus--->uterus.</em>

<em></em>

8 0
4 years ago
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