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Semmy [17]
3 years ago
5

1. Blood in the gills runs in the opposite direction as the water outside the gill filaments. By running in the direction opposi

te the flow of water, the blood is always exposed to an area of water that has a higher level of oxygen. Oxygen moves across the membranes by diffusion. So if the gill had more oxygen than the water, the fish would lose oxygen to its surroundings. This is an example of:
Biology
1 answer:
soldier1979 [14.2K]3 years ago
7 0

Answer:

Counter current  system  for oxygen exchange. This  process allow the exchange through diffusion of oxygen from higher concentration of water to lower concentration in the fish blood, from the surface of the  fish lammela,Therefore as  blood flows through the gill capillaries,oxygen at higher diffusion gradient,enters the capillaries, sustained by higher diffsuion rate of Oxygen Counter by opposite blood flow.

Explanation:

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Función del sistema Nervioso
Alex787 [66]

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El sistema nervioso consiste en el cerebro, la médula espinal, los órganos sensoriales y todos los nervios que conectan estos órganos con el resto del cuerpo. Juntos, estos órganos son responsables del control del cuerpo y la comunicación entre sus partes.

3 0
3 years ago
Explain the connection between earths magnetic field and iron
german
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments.The Earth's magnetic field is somewhat caused by the composition of the earth's core which is rich in iron minerals. There is a solid inner core that is made of iron which makes up to 2/3 of the moon's size. The charged metal of the iron produces electric currents, consequently resulting to Earth's magnetic field.
7 0
3 years ago
What was Mendel's explanation for the fact that 0% of the offspring from this cross were green?
VMariaS [17]
So Mendel got roughly 75% yellow and 25% green in f2. This means that f1 contains all heterozygous genes, as shown below

Y y
Y YY Yy
y Yy yy
Summary: 75% YY or Yy, 25% yy

Which means that green (y) is a recessive phenotype, while yellow (Y) is a dominant phenotype, since plants with heterozygous genotype Yy express the yellow trait.
5 0
3 years ago
Trapping has severely reduced the population of rabbits in an ecosystem, as shown in the bar graph below. What is the most likel
Romashka [77]

Answer:D

Explanation

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8 0
3 years ago
A student is asked to describe the path of a paper airplane that is thrown
irga5000 [103]

it's cururururuvy it curves up and then down

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3 years ago
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