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iren2701 [21]
3 years ago
5

An estuary is _______.

Biology
2 answers:
Setler [38]3 years ago
7 0
The correct answer is A.

son4ous [18]3 years ago
5 0

Answer:

an ecotone

Explanation:

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In transverse waves, the particles of the medium move at right angles to the direction in which the wave is traveling. Please se
iragen [17]
The answer is A. True
3 0
3 years ago
In most vertebrate neurons, an action potential arrives at the axon terminal and causes the release of chemical messenger molecu
erik [133]

The correct answer is option d, that is, neurotransmitters.  

A neurotransmitter refers to a chemical component, which is discharged at the terminal of a nerve fiber by the introduction of a nerve impulse, and by diffusing across the junction or synapse. It helps in the transfer of the impulse to another muscle fiber, nerve fiber, or some other composition. Acetylcholine is a kind of neurotransmitter, that is, used by neurons in the CNS and the PNS in the control of activities ranging from heart rate and muscle contraction to digestion and memory.  


5 0
3 years ago
According to the food chain below, which of these organisms most likely contains the least concentration of toxins (DDT) ?
agasfer [191]

Answer:

Hawk

Explanation:

Dichlorodiphenyltrichloroethan which is also known as DDT is a colorless, tasteless and almost odorless crystalline chemical compound. It was originally developed as an insecticide and it causes harm to wildlife animals.

When the chemical are sprayed or gets in contact with the soil it is the terrestrial organisms such as plants and primary consumers who gets affected the most due to direct contact with the chemical.

Animals such as hawks who are arboreal and tertiary consumers from the list of options don’t get affected directly from the source of the DDT contamination which makes them least affected.

5 0
3 years ago
How can molecular biology be used to trace the process of evolution?
NikAS [45]

Answer:

Explanation: At the molecular level, the universal genetic code and homologous molecules provide evidence of common descent.

7 0
3 years ago
Que pasaría si un organismo de la red trófica desapareciera
arlik [135]

Respuesta:

La respuesta más simple posible sería decir que toda la red alimentaria colapsaría y todos los organismos de la red morirían de hambre. ... Eso es porque la vida vegetal suministra la energía inicial al sistema de la red alimentaria. Sin plantas, no hay alimento para los herbívoros.

¡Espero que esto ayude!

5 0
3 years ago
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