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snow_lady [41]
3 years ago
15

The primary function of a muscle:

Biology
2 answers:
Neko [114]3 years ago
6 0
D. Muscles are the only tissue in the body that can contract, and are responsible for all movement.
kozerog [31]3 years ago
6 0
The answer is d. To shorten and contract
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PLEASE HELP !!<br> ILL GIVE BRAINLIEST <br><br> NO LINKS OR FILES.
Shkiper50 [21]

Answer:

I would say c because, sure the polar bears can swim and other things there will be very little ice once the ecosystem melts.

Explanation:

common sence

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3 years ago
​In human audition, the vibration of the ossicles is triggered by the vibration of the ____ and transmitted directly to the ____
goblinko [34]

In human audition, the vibration of the ossicles is triggered by the vibration of the tympanic membrane (the eardrum) and transmitted directly to the fluid and membranes of the inner ear.

The inner ear is shaped like a snail with a thousands of tiny hair cells in it and it is called the cochlea. Hair cells change the vibrations into electrical signals that are sent to the brain through the auditory nerve.


3 0
3 years ago
NEED HELP QUICK PLEASE HELP
kozerog [31]

Answer:

Question 1

D

Question 2

C

Question 3

D

Explanation:

1. An ecosystem is MOST likely to return to its original condition after Tall prairie grass burns after being struck by lightning.

Here is a research paper in which they explained how this happened. (Komarek, E. V. (1971). Lightning and fire ecology in Africa. In Tall Timbers Fire Ecology Conference (Vol. 11, pp. 473-509).)

2. In some national parks, controlled fires are maintained by firefighters. The major reasons for using controlled burns to maintain certain ecosystems is to give nonnative plants a chance to colonize the region.

A recent article provided the insight of this situation (Xanthopoulos, G., Delogu, G. M., Leone, V., Correia, F. J., & Magalhães, C. G. (2020). Firefighting approaches and extreme wildfires. In Extreme Wildfire Events and Disasters (pp. 117-132). Elsevier.)

3. One reason for the change in the Galápagos ecosystem has been the introduction of species that were not on the island before, such as donkeys, goats, cats, dogs, and insects. The introduction of nonnative species MOST likely disrupt the balance of life on the islands due to greater competition for limited food sources.

Scientist said that food competition is actually a struggle to survive in any ecosystem here is the reference paper (Eckhardt, R. C. (1972). Introduced plants and animals in the Galapagos Islands. Bioscience, 22(10), 585-590.)

5 0
3 years ago
Which of the following is the flattened portion of a leaf?<br> petiole<br> blade<br> vein
Pavel [41]
The blade is the flattened portion of the leaf. These expanded blades are called lamina which are attached to the plant stem by the petiole. They come in diverse shapes, sizes, and other characteristics. The other choices are just supporting structures of this structure of the plant. 
6 0
3 years ago
PLEASE HELP ME THIS IS DUE BY 11:59 PM
kifflom [539]

Answer: boom

Explanation: hope this is right :)

7 0
2 years ago
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