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3 years ago

Which of these gymnosperms are known to be important in maintaining the balance of carbon in an ecosystem?

2 answers:

8 0

Answer;
D. redwood tree forests.

Explanations;
Gymnosperms are seed-bearing vascular plants including, conifers, cycads, ginkgo, in which the ovules or seeds are not enclosed in an ovary.
In gymnosperms the cone is the female reproductive part and the pollen is the male reproductive part.
Red wood trees are examples of gymnosperms and are important in maintaining the balance of carbon dioxide in the atmosphere like other green plants.

ASHA 777 [7]3 years ago

8 0

Answer:

C.mosses and horsetails

Explanation:

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igor_vitrenko [27]

Answer:

Explanation:

So lets go over facts of mieosis and mitosis:

Meiosis is sexual reproduction

Mitosis is asexual reproduction

Meiosis in animals is how they reproduce

Mitosis in animals is how they regenrate their cells

Mitosis copies the orgninal cell.

Meiosis mixes a male and female egg and sperm to form a zygote

Ok, knowing this. We can find our answer.

Since we know meiosis is sexual, and mitosis asexual, we can get rid of C.

We also know that meiosis is in animals, and so is mitosis, so we can get rid of A.

Finally we can get rid of D, since we know due to the male and female genetics(and through the swapping of chromesomes during prophase)that genetic variation occurs in meiosis, but since mitosis copies a single cell, it is not genetically varient.

<u>So the answer must be C, which states that Mitosis has genetically identical cells, while mieosis does not. </u>

Hope this helps! ;)

3 0

3 years ago

Are SA citizens vaccinated against yellow fever? give two reason for your answer.

Brut [27]

South African people are vaccinated with Yellow fever. First, SA is strict in the implementation proof of vaccination in travelers coming in the country. The vaccination card must show vaccination at least ten days prior to travel. This is to prevent reintroduction of the disease to SA people. Second, In the list of Center for Disease Control, South Africa is not included in the countries with an endemic Yellow fever which means that the disease is wiped out if not controlled through vaccination.

4 0

3 years ago

The correct sequence of sound waves in the ear is ________.

ElenaW [278]

Answer:

d. malleus > incus > stapes > oval window

Explanation:

Sound waves enter external auditory canal which makes the eardrum to vibrate. Malleus is in contact with eardrum while stapes is in contact with the oval window. Movement of malleus makes the incus to move which in turn stimulates large movement in stapes.

Since stapes is in contact with the oval window, the vibration from stapes passes to the oval window. Hence, among the given options, the correct order of movement of sound waves is "malleus > incus > stapes > oval window" .

8 0

3 years ago

2 What is the function of proteins in the cell membrane?

77julia77 [94]

Answer is F: Facilitates the movement of particles across the cell membrane.

Types of proteins found in the cell membrane includes channel and carrier proteins, both which are involved in the process of facilitated diffusion where they help facilitate the movement of large or polar molecules across the membrane.

8 0

2 years ago

The “box” part of a box-and-whisker plot represents __________.

Inga [223]

<span>quartile values..................</span>

5 0

4 years ago