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3 years ago

What are some of the problems associated with aquaculture?

Biology

1 answer:

ch4aika [34]3 years ago

7 0

Answer:

Explanation:

Pollution: The farming of marine fish, crustaceans and even bivalves produces waste in the form of fecal matter and unused feed. These largely nitrogen-based wastes can cause oxygen depletion in coastal environments and a net loss of marine productivity in certain coastal areas.

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1. Perubahan dapat terjadi karena adanya interaksi manusia dengan lingkungan.

Lady bird [3.3K]

Answer:

Dampak negatif manusia terhadap lingkungan adalah:

Kelebihan penduduk, polusi, pembakaran bahan bakar fosil, dan penggundulan hutan. Perubahan seperti ini telah memicu perubahan iklim, erosi tanah, kualitas udara yang buruk, dan air yang tidak dapat diminum.

Dampak positif manusia terhadap lingkungan adalah:

Melindungi spesies yang terancam punah dan membersihkan danau dan laut memiliki efek positif terhadap lingkungan. Di rumah, Anda dapat membantu planet ini dengan mendaur ulang limbah dan menanam tanaman atau sayuran.

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3 years ago

A crayfish lives in a shallow pond along with frogs, turtles, various insects, and small fish. Meadowsweet grows on the banks of

lora16 [44]

The pond is considered as a the crayfish's
A) habitat
This is because the pond is where the crayfish lives and where it gets its food. It does not stray far from it and go back to it just to get food. It stays in the same location.

3 0

3 years ago

Why do we need to breath 17000 a day

dalvyx [7]

We need to breath every day and hat just happens to be the amount of times we breath, but a human can actually breath up to 30,000 times per day it all depends.

4 0

4 years ago

Read 2 more answers

Lymph is another medium of circulation in the human body. justify

vredina [299]

Answer:

Yes, Lymph is another medium of circulation in the human body

Explanation:

Yes, Lymph is another medium of circulation in the human body. Lymph is part of lymphatic system which in turn is part of the circulatory system. The lymphatic circulatory system comprises of lymphatic vessels which carry clear fluid "lymph" towards the heart. The flow however is unidirectional

6 0

3 years ago

Q1 What is the correct sequence an impulse travels through the four components of the heart’s nodal system?

Likurg_2 [28]

Answer:

1. The correct sequence in which an impulse travels through the heart’s nodal system is SA node, AV node, bundle of HIS and Purkinje fibers (B-C-A-D)

2. The structure that depolarizes next after the AV node is bundle of HIS.

3. Soon after the onset of ventricular systole the semilunar valves open.

Explanation:

1. The conduction system of the heart -nodal system- is what allows myocardial contraction, which translates into heartbeat and pumping of blood.

This conduction system begins in the sino-atrial node (SA), which is located in the upper portion of the right atrium, and is regulated by the autonomic-sympathetic and parasympathetic nervous system.
The impulse generated in SA passes to the atrioventricular node (AV) that is located in the interventricular septum (IVS).
From AV, impulse passes to the His-Purkinje system, formed by the bundle of His, which runs along the IVS and is divided into two branches, right and left.
Purkinje fibers are born from each of the bundles of His bundle, and are distributed through the right and left ventricles.

2. As a result of the depolarization that occurs in the atrioventricular node - which undergoes a brief interruption in its path - depolarization continues in the bundle of His, which runs through the rest of the interventricular septum to divide into two branches, the right and the left.

The left branch is usually subdivided into three fascicles, the left anterior, left posterior and a central branch. Purkinje fibers are born from each of these branches and fascicles, which stimulate myocardial contraction.

3. Ventricular systole consists of contraction of the myocardium, which leads to boost blood contained in the ventricles to the lungs or general circulation. In this phase of the cardiac cycle, the semilunar valves - which allow access to the pulmonary and aortic arteries - open, which produces the second cardiac noise.

Other events that occur during systole are the increase in ventricular pressure and the closure of the atrioventricular valves (AV), to prevent ventricular blood from returning to the atria.

Learn more:

Event that occurs during systole brainly.com/question/4552813

3 0

4 years ago