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Misha Larkins [42]
3 years ago
5

The bonding characteristics of carbon are most similar to the bonding characteristics of A hydrogen B silicon C helium D sulfur

Biology
1 answer:
dlinn [17]3 years ago
5 0

Answer:

D, Sulfur

Explanation:

https://www.coursehero.com/file/13827102/PERIODIC-TABLE-QUESTIONSANSWERS/

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Active and passive humoral immunity are both mechanisms of adaptive immunity that use antibodies. true false
dolphi86 [110]

Active and passive humoral immunity are both mechanisms of adaptive immunity that use antibodies. yes this is true

  • Our adaptive immune system protects us from infection-related mortality. An new-born born with a significantly compromised adaptive immune system may die shortly unless extreme steps are taken to isolate it from a wide range of infectious agents such as bacteria, viruses, fungi, and parasites.
  • The purpose of adaptive immunity is to eliminate invading infections as well as any harmful chemicals they create. Because these reactions are damaging, it is critical that they only occur in response to molecules that are alien to the host and not to molecules that are native to the host. The adaptive immune system's capacity to identify what is foreign from what is self is a fundamental feature.

To learn more about adaptive immune.

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1 year ago
Explain how the availability of resources in the environment is linked to exponential growth of a species
Alinara [238K]

Answer: Exponential growth occurs when resources in the environment are abundantly available to a species.

Explanation: When a food source amount drops, so does the survival rate of the predator that eats that specific food source. When a food source grows too abundantly at too fast a rate, predators increase in numbers.

7 0
3 years ago
HELP SOS PLEASE !!!!! (ONLY CORRECT ANSWERS PLEASE)
Phantasy [73]

Answer:

1- Option A) describes an index fossil. Trilobite existed for a short time, but was abundant and lived in many locations.

2- Option B) Continents were once joined and have since drifted apart.

Explanation:

1) Fossils are animal and vegetable rests found in different strata of sedimentary rocks. Sedimentary layers deposit chronologically, so they are used to reflect history. They keep in each layer some of the forms of life that inhabited that area in the past. These fossils turn to be very useful while dating ages. The term Index fossils refer to those fossils that only existed in a given era or geological period during evolution.  

Index fossils must:    

• Be easily recognizable and distinguishable from all the other fossils

• Have lived in a relatively short geological period

• Present a wide geographic distribution

• Have lived in different sedimentary basins

• Appear in different types of rocks

• Be abundant

<em>A) Trilobite existed for a short time, but was abundant and lived in many locations. </em>The species accomplish the requirements. It is easily recognizable, had a wide geographic distribution, was abundant, and lived for a short time.  

2) The tectonic plates theory states that there is a continual movement of the crust. It explains the movement of the different plates and their directions and interactions. The continental drift theory explains how these movements have been taking place since millions of years ago. When continents were together in a unique continent, many species used to inhabit it. When plates started to separate, they took some of these species that got apart by the ocean. Some species were already dead and fossilized, while some other organisms died during continental drift and got fossilized after the divergence. <em>The existence of the same fossils, placed in the same layers and of the same age, suggests that they used to inhabit the same area and died during the same time, meaning that continents were together when they got fossilized. </em>

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3 years ago
What do comets and asteroids have in common?
Karolina [17]

Answer:

They are both celestial bodies orbiting our Sun, and they both can have unusual orbits, sometimes straying close to Earth or the other planets

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3 years ago
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Access to potable water is most heavily limited by
sattari [20]
The access is most heavily limited by Climate

In an extremely dry and hot climates such as desert, it will be incredibly hard to access potable water because they evaporate really quickly

Meanwhile in a wet and cool climates such as rain forest, it will be extremely easy to access potable water
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