1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vodka [1.7K]
3 years ago
13

"why is petroleum the primary fuel used for transportation in the united states? i. it has a high energy value per unit volume.

ii. it has quick start and stop times for providing energy. iii. it produces a low amount of pollution per joule."
Biology
1 answer:
xxMikexx [17]3 years ago
4 0
Petroleum is the primary fuel used for transportation in the US because it has a high energy value per unit volume and it has a quick start and stop times for providing energy. Additionally, petroleum is extremely easy to extract, it is a high density fuel, can also be transported over long distances and provides fuel that works with our infrastructure. 
You might be interested in
Assess whether urban or rural areas are more likely to have high levels of smog.
yan [13]

The urban areas are more likely to have smog than the rural areas.

Urban area can be referred to as the town or city with advances an developments. Since the urban areas have more population density, more electronic items, vehicles and also industries, that is the reason why they are more likely to produce the smog or any other form of pollution.

Smog is a type of air pollution formed dye to the combination of smoke and fog. The most common source of smog is the burning of coal. This can be either due to industries or the fuels of vehicles. Fog can be of two types: Photochemical smog and industrial smog.

To know more about smog, here

brainly.com/question/15728274

#SPJ4

6 0
2 years ago
Why virus, virions, prions have no place in five kingdom classification​
Ainat [17]

Hey, there!!

There is no place for virus, virions, prions in kungdom classification. The reason is they show both living and non living characters, which don't define them whether they are living beings or non living things.

As in 5 kingdoms, the only living organisms are classified.

  • Kingdom Monera mostly deals with the organism which contains prokaryotic cells.
  • Kingdom Protista deals with the organism which have eukaryotic cells.
  • Kingdom Fungi deals with various fungal organism.
  • Kingdom Plantae deals with various type of plants.
  • Kingdom Animalia deals with various type of animals.

So, you can see that there is non of the kingdoms which deals with the organism which have similar characteristics like viruses, virions and prions.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

7 0
3 years ago
By controlling the spread of vegetation and the balance of certain fish species, the American alligator serves as a(n) in its ec
seraphim [82]

Answer: Below

Explanation:

Alligators play an important role in maintaining ecosystem balance. Sitting at the top of the food chain, alligators are top predators and help keep other animal populations in balance. By digging holes and leaving trails throughout marshes, they create habitats for fish and marine invertebrates

3 0
2 years ago
One brief stimulus of a skeletal muscle may result in a single isolated contractile event, which is called a twitch. One twitch
Inessa05 [86]

Answer:

These statements are true.

8 0
3 years ago
Please hurry!!
antoniya [11.8K]

Answer:

Living organisms are adapted to their environment. This means that the way they look, the way they behave, how they are built, or their way of life makes them suited to survive and reproduce in their habitats. For example, giraffes have very long necks so that they can eat tall vegetation, which other animals cannot reach. The eyes of cats are like slits. That makes it possible for the cat's eyes to adjust to both bright light, when the slits are narrow, and to very dim light, when the slits are wide open.

Behavior is also an important adaptation. Animals inherit many kinds of adaptive behavior. In southern Africa there are small animals called meerkats, which live in large colonies. The meerkats take turns standing on their hind legs, looking up at the sky to spot birds of prey. Meanwhile, the meerkats in the rest of the colony go about their lives. You can probably think of many other features of body or behavior that help animals to lead a successful life.

In biology, an ecological niche refers to the overall role of a species in its environment. Most environments have many niches. If a niche is "empty" (no organisms are occupying it), new species are likely to evolve to occupy it. This happens by the process of natural selection.

Many fossils of different kinds of horses have been discovered, and paleontologists think that the earliest ancestor of the modern horse lived in North America more than 50 million years ago. This animal was a small padded-foot forest animal about the size of a dog. If you saw one next to a modern horse, you might not even think the two were related! As time passed, the climate of North America became drier, and the vast forests started to shrink. Grasses were evolving, and the amount grassland was increasing. Horses adapted to fill this new grassland niche. They grew taller, and their legs and feet became better adapted to sprinting in the open grasslands. Their eyes also adapted to be further back on their heads to help them to see more of the area around them. Each of these adaptations helped the evolving grassland horses to avoid predators. Their teeth also changed to be better adapted to grinding tough grassland vegetation.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • In a lysogenic infection the viral DNA that is embedded in a host cells DNA is called
    8·2 answers
  • A neurotransmitter that is important in muscle contraction is
    12·2 answers
  • Open dumping in landfills was outlawed in many states because of _____.
    10·2 answers
  • Before classifying insects into different orders, review the larger classifications for insects:
    14·1 answer
  • What is the definition of a hypothesis ?
    11·2 answers
  • What was the benefit of crop rotation?
    11·1 answer
  • Is interphase before or after mitosis?
    8·1 answer
  • What happens when a light beam passes from air in water?
    11·1 answer
  • NEED ASAP
    15·2 answers
  • In domestic swine there is a dominant allele which produces a white belt around the body. The recessive allele produces uniform
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!