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siniylev [52]
3 years ago
5

What is the biggest threat to aquatic communities?

Biology
2 answers:
9966 [12]3 years ago
7 0

Answer:

Major threats to freshwater fishes and other freshwater biodiversity, include: habitat modification, fragmentation, and destruction; invasive species; overfishing; environmental pollution; forestry practise; and climate change.

Luba_88 [7]3 years ago
7 0

Answer:

pollution and over hunting

Explanation:

it will kill animals

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What type of membrane provides lubrication to the pleural, pericardial, and peritoneal cavities?
jenyasd209 [6]

Answer;

-Serous membrane

Explanation;

-Serous membranes are thin membranes that lines the internal body cavities and organs such as the heart, lungs, and abdominal cavity. The thin membrane is made up of mesothelium tissue which originates from the mesoderm.

-These membranes consists of a single layer of flattened mesothelial cells applied to the surface of a thin layer of collagenous tissue that attaches to underlying endothoracic/transversalis fascia. They function to preclude adhesions among organs, thereby allowing organs to move freely relative to one another.

6 0
3 years ago
What kind cell has chromosomes like this
igomit [66]
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA<span>). Passed from parents to offspring, </span>DNA<span> contains the specific instructions that make each type of living creature unique.</span>
8 0
3 years ago
The output region is the site of ______________________.
tester [92]

Answer:

The correct answer is option C (voltage gated Na+ channels).

Explanation:

Output region or axon terminal is the structure of neuron which transmits the signals to other nerve cells.

The signal is transferred via action potential generated by the dendrite cell which moves along the axon and reaches the synaptic junction.  

At the synaptic junction, voltage-gated channel (Na+) channels located in the membrane of the axon terminal cell opens due to the changes in the electric membrane potential which play important role in returning the depolarized cell to a resting state.

Thus, option C (voltage-gated Na+ channels) is the correct answer.

7 0
3 years ago
What is what is a hollow impression of a trilobite
gizmo_the_mogwai [7]
The hollow impression of a trilobite is an original remains fossil.
5 0
3 years ago
What is an individual who carries two different alleles of a gene is termed?
Ilia_Sergeevich [38]
Their called heterozygous 
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3 years ago
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