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Lena [83]
3 years ago
7

How does one determine when an ecosystem is in balance

Biology
1 answer:
RUDIKE [14]3 years ago
3 0
An ecosystem is balanced when the plants, animals, humans and other non living things live in harmony where there is no disturbance in balance. With factors like overpopulation, pollution etc there are more chances of loosing that harmony.
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Which of the following statements about cardiac muscle is true? a. Cardiac muscle is like smooth muscle, because smooth muscle h
Aleonysh [2.5K]

Answer:

c. Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Cardiac muscle is also referred to as myocardium and it's one of the three (3) muscles found only in the heart of vertebrates, the other two (2) being smooth muscle tissue and skeletal muscle tissue.

Cardiac muscle contains bands like skeletal muscle referred to as sarcomeres (contractile units), but its contractions are involuntary like smooth muscle and it's typically being regulated by the sinoatrial node of the heart.

8 0
3 years ago
Which of the following statements is true according to Mendel's law of segregation?
musickatia [10]

Answer:

D. Offspring only receive one version of their parents' traits.

Explanation:

To be specific, they receive on version of each parent. Traits are segregated during gamete formation, where one version of the trait comes from one parent, and the other version of that same trait comes from the other parent. When they join during fertilization, a new organism is made through the combination of the traits. However, the trait that will be expressed, according to Mendel, would be the one that is dominant.

3 0
3 years ago
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Give an example of a free-living flatworm and a parasitic flatworm
harkovskaia [24]

Free-living flat worms = carnivores or scavengers
Have digestive cavity, mouth, pharynx 

Parasitic Flatworms: = Feed on blood, tissue fluids, or pieces of cells from within a host

4 0
3 years ago
Read 2 more answers
Does anyone know this??
Mandarinka [93]

Bauxite ore is one of the primary source of aluminum but it must first be chemically processed to produce alumina (aluminum oxide). The next step of aluminum production is smelting of alumina using an electrolysis process (Hall-Heroult process). This electrolysis process is driven by electrical current. Electrolyte (molten salt) with immersed carbon anodes is used in order to dissolve the alumina. Carbon anodes are carrying electrical current and thee chemical bond between aluminum and oxygen in the alumina is broken.

6 0
3 years ago
Why is the blood pressure inside a vein less than blood pressure inside an artery
Tatiana [17]
Because it carries a lot of blood to the arteries
3 0
3 years ago
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