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lesya [120]
3 years ago
8

The 1st organism in a food chain must always be what type of organism

Biology
1 answer:
mr_godi [17]3 years ago
5 0
The 1st type is called autotrphs. Primary consumers are animals that eat primary producers; they are also called herbivores
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28 points (sorry cant get many)
Luda [366]
The answer is Mutualism because they are both benefiting
3 0
3 years ago
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The stethoscope is a device commonly used by doctors to monitor heart function. When listening to a heart beating using a stetho
Effectus [21]

Answer:

The correct answers are:

1. closing

2. the ventricles and arteries,

3. a constricted trachea

Lub is the first sound of a heartbeat and is mentioned as S1. It is usually produced due to the closing of tricuspid and and mitral or bicuspid valves present between atria and ventricles.

Tricupsid is located between atrium and ventricle of the right hand side and mitral valve is located between atrium and ventricle of the left hand side. They prevent the back flow of blood from ventricles to their respective atria.

Dub, being the second sound is written as S2. It is produced due to the closing of pulmonary (located between right ventricle and pulmonary artery) and aortic valves (located between left artery and aorta).

These valves prevent the back flow of blood from arteries into the ventricles.

The time between the two sounds is often taken as the measure of the diastole i.e. ventricular filling.

Wheezing refers to a high-pitched sound produced when a person breathes, especially during exhale. It is caused by constriction of the airways or inflammation. It is considered as a symptom of various diseases such as asthma, COPD, allergies, bronchitis etc.

8 0
3 years ago
the muscular system and the skeletal system are two different organ systems, but they’re often referred to jointly as the muscul
Lana71 [14]
The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person's body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
7 0
3 years ago
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The Gram stain technique is valuable in distinguishing Bacteria from viruses whether or not a bacterium has pili. The flagella o
erastova [34]

Answer:

False

Explanation:

Gram stain technique is a method use to classify bacteria into large groups base on their different cell wall components. It differentiate gram positive and gram negative by coloring them with red or Violet colors.

Gram stain is use for identification and classification of bacteria.

Gram positive stain violet due to presence of thick layers of peptidoglylcan in their cell walls and gram negative stain red due to thin layers of peptidoglylcan in their cell walls.

8 0
3 years ago
The eyes and nose of the crocodile are set on top of it's head to allow it so to see and breathe while keeping most of it's body
azamat

Answer:

The most fitting answer would be B.Adaptations to fit a location

Explanation:

Hope this helps! If this is incorrect, I am truly sorry.

3 0
2 years ago
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