BIOLOGY HIGH SCHOOL

Humans breathe through bronchi. What structure do insects have for breathing? A.
gills







B.
tracheae







C.
skin







D.
lungs

Answers

Answer 1
Answer: B. Trachea. Did you know that insects used to be big back in the past because of the extra oxygen?
Answer 2
Answer: i would say tracheae i hope this helps

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What is the difference between cycads and ferns?

Answers

Cycads typically have a stout and woody (ligneous) trunk with a crown of large, hard and stiff, evergreen leaves while ferns reproduce via spores and have neither seeds nor flowers.

Where is the Heart located in human body?

Answers

lies between the right and left lungs in the middle of the chest and slightly towards the left of the breastbone .

Whats the definition of a seed I don't have a dictionary

Answers

An embryonic plant covered by a hard outer shell!
The unit of reproduction of a flowering plant, which can develop into another such plant.

Why do birds fly? And also how to get rid of scariness of birds?

Answers

Well... Birds fly because that is their species I suppose.. I'm only 10 don't judge me
Birds fly because they need to get their food source. You cannot get rid of the "scariness" because that's what the birds are used to and they have adapted to flying. 

Which of the following is NOT a characteristic of living things?a.one or more cells
b.complex chemical activity
c.reproduction
d.nuclear reactions

Answers

Nuclear reaction is not a characteristic of a living thing

There are two types of cell division. The first (A) produces cells that are identical to the original cell. The second (B) produces cells that are different from the original cell. Which type of cell division do you think is the responsible for these processes

Answers

Answer:

A - mitosis

B - Meiosis

Explanation:

Mitosis is also referred to as equational division or division of vegetative or somatic cells. This type of cell division leads to the production of cells that are genetically identical to the parent cell.

Meiosis is also referred to as reductional cell division or the division of sex cells. The daughter cells have half of the genetic component of the parent cell. Exchange of chromosomal materials takes place between non-sister chromatids during meiosis and this ensures that the daughter cells become genetically different from their parent cell.

Hence, (A) is mitotic cell division while (B) is meotic cell division.
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