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Aleksandr [31]
3 years ago
7

What is a key feature of circulation?

Biology
1 answer:
lubasha [3.4K]3 years ago
6 0

Answer:Nutrition Transport

Explanation:

I got it on edge, i hope this helps!

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PLEASES HELP ME THIS IS DUE TODAY!!! WILL GIVE BRAILIEST!!!!!!
fgiga [73]

Answer:

Where is the question bro!!!

Explanation:

5 0
2 years ago
Results published in __________ are the most respected in science because they have passed through rigorous evaluation process i
Helga [31]
The answer is B. Peer-reviewed journals.

Results that are peer-reviewed means that they have been checked by scientists who are also experts in the same fields. And that means that the results are reliable.
8 0
3 years ago
Read 2 more answers
Catfish have dorsal fin spines, which help defend against predators, and caudal fins, which help to propel the fish through the
Yuliya22 [10]

Answer:

Swim bladder

Explanation:

Swim bladder is an organ in bony fishes such as catfish that controls their buoyancy. It is also known as air bladder. The swim bladder contains  gas, mainly oxygen and functions as a hydrostatic organ.

As the fish moves in deeper water, the gas in the swim bladder is contracted which decreases the volume of swim bladder.

3 0
3 years ago
Which of the following best explains why ecosystems need a continual influx of new energy?
JulsSmile [24]
What are the choices?
3 0
3 years ago
Si una población crece mucho otra vez después de un cuello de botella con el paso del tiempo aumentará diversidad genética ¿por
sammy [17]

Answer:

los mecanismos capaces de generar diversidad actúan para incrementar la variabilidad genética en la población que sufrió el cuello de botella

Explanation:

Un cuello de botella se refiere a una reducción drástica en el tamaño de una población (por ejemplo, debido a una catástrofe natural). Un cuello de botella es un fenómeno que está asociado a la ​reducción en la variación genética y fijación de ciertos alelos en la población resultante, lo cual es causado por la deriva genética, es decir, debido al muestreo al azar de los individuos que formarán la población en la siguiente generación. Paulatinamente, los mecanismos capaces de generar variabilidad genética aumentarán nuevamente la diversidad de la población que sufrió el cuello de botella. En una población de reproducción sexual, la variación genética se genera mediante cuatro procesos diferentes: 1-mutación (es decir, la aparición de nuevos alelos debido a alteraciones en la secuencia de ADN); 2-recombinación (es decir, el intercambio de información genética entre cromátidas no hermanas durante la meiosis); 3-segregación independiente de cromosomas durante la meiosis (capaz de producir nuevas combinaciones de alelos) y 4-fertilización al azar (lo cual también incrementa el número de combinaciones entre gametos que darán lugar a un nuevo individuo).

4 0
3 years ago
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