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solong [7]
3 years ago
9

a small polar molecule enters a cell with help from a membrane protein. no additional energy was needed to complete this process

. what typem of transport his this?
Biology
1 answer:
Naddika [18.5K]3 years ago
4 0
Https://www.answers.com/Q/A_small_polar_molecule_enters_a_cell_with_help_from_a_membrane_protein._no_additional_energy_was_needed_to_complete_this_process._what_type_of_transport_is_this
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The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of
Usimov [2.4K]

The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of the sudden appearance of organisms.

Explanation:

Precambrian eon is the initial existence on earth that can be predicted by the study of rocks and remaining of fossils. It has been seen as the existence of skeleton in this era, before this era no such things has been observed, even the development of sexual reproduction.

The Phanerozoic era comes after the Precambrian era, more advanced kinds of fossils of animals had been observed in this era.  Phanerozoic era period of life on earth. Large organisms sudden appearance are seen in the Phanerozoic era i.e. First dinosaurs, mammals, fishes, angiosperms,first vertebrates etc.

5 0
3 years ago
How far from the point of origin did the wave travel? 2004 Indonesian tsunami and
irina [24]
This earthquake oringed 231 miles.
3 0
3 years ago
What is a name for organisms that don’t perform photosynthesis?
kiruha [24]

Heterotrophs

Explanation:

Heterotrophs are organisms that do not perform photosynthesis. They do not obtain their nourishment using products of synthesis of food using carbon dioxide in the presence of sunlight.

  • Heterotrophs are consumers in the ecosystem.
  • They use food materials from plants for their nourishment.
  • The chemical energy stored in food is released during the process of cellular respiration in them.

Learn more:

Heterotrophs brainly.com/question/3150299

#learnwithBrainly

4 0
3 years ago
How would the cycle be different if there were no water on earth?
Luda [366]

Answer:

What I expect would happen: First, there would be no clouds. Lack of clouds would mean there would be no rain and the average temperature of the Earth would increase, resulting in large areas of land becoming desert.

Explanation:

The water cycle is the process where water falls as rain, is transported via rivers and streams to lakes and oceans, evaporates into the sky, condenses into clouds, and falls as rain again. Here's a diagram:

water.usgs.gov

water.usgs.gov

So what would happen if there were no condensation stage?

The condensation stage is the one where water vapour gathers together into clouds (and when the clouds become heavy enough with vapour, release water as rain). So the first answer is that there would be no clouds.

Without clouds, I foresee a few things happening:

From clouds come rain. With no clouds, there would be no rain.

Clouds move moisture from lakes and oceans (where it evaporates up) to mountains and other places inland that spark rainfall. And so vast stretches of land would become desert.

Clouds reflect sunlight and help cool the Earth. With no clouds, the average temperature of the Earth would increase significantly.

And so to summarize what I expect would happen. First, there would be no clouds. Lack of clouds would mean there would be no rain and the average temperature of the Earth would increase, resulting in large areas of land becoming desert.

Explanation:

4 0
3 years ago
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