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icang [17]
4 years ago
5

How to understand the difference from active transport and passive transport?

Biology
1 answer:
miv72 [106K]4 years ago
8 0
Active transport needs to actively acquire energy to occur, while passive transport happens on its own without energy.
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En que conciste la funcion de relacion?
love history [14]
Una función es una relación en la que cada posible valor de entrada conduce exactamente a un valor de salida. Decimos "la salida es una función de la entrada". Los valores de entrada componen el dominio y los valores de salida componen el rango.
8 0
3 years ago
Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-Pg Boundary? They found evidence of
Rudiy27

Answer:

They found evidence of an impact crater in Mexico

Explanation:

The K-Pg boundary is the boundary between the Cretaceous period and the Paleogene period, but also marking the end of the Mesozoic era and the beginning of the Cenozoic era. This boundary is dated to roughly 66 million years ago. The K-Pg boundary is characterized with a mass extinction. The dominant organisms on Earth all died out, including the dinosaurs, both terrestrial and aquatic, as well as the flying reptilians, with only the birds surviving from that super-family. The reason for the mass extinction has been an impact with an asteroid or a comet, that was very large and hit the Earth where the Yucatan Peninsula in modern day Mexico is located. The impact was devastating, with heat waves, tsunamis, earthquakes, triggering of the majority of the volcanoes, wildfires, all combined managed to devastate the environment, thus big portion of the species living in it as well. The lucky survivors were smaller organisms, and the mammals turned out to be the most successful in occupying the empty niches and have became the dominant organisms on the planet.

6 0
3 years ago
Name 3 professional areas in the U.S. that use the metric system
OLga [1]

Answer;

-the scientific fields, medical fields, or technical fields

Explanation;

-There are two main systems of measurement in the world: the Metric system and the US standard system.

-The Metric (or Decimal) system is made of units based on powers of 10. To convert units, one needs to move the decimal point.The prefix (beginning part of the word- i.e. kilo or milli) describes the size of the given unit.

5 0
3 years ago
Read 2 more answers
The feeding step an organism occupies in a food chain is known as a ____
tatuchka [14]

Answer:

Trophic level

Explanation:

5 0
4 years ago
Given the number of blood vessels in the retina, why do you suppose that you are not able to see them normally
AysviL [449]

Answer:

You can't see the blood vessels themselves because vision depends on a process that makes it impossible to see things that are stationary with respect to the retina. Light receptors in the retina respond only to changes in light reaching them, not to a steady image.

Have a great day! :D

6 0
3 years ago
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