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
mart [117]
4 years ago
10

The first railroad opened in the United States in _____.

Biology
2 answers:
Tasya [4]4 years ago
5 0
1829 Aug 8: The Delaware and Hudson Canal Company's gravity railroad<span> in northeast Pennsylvania </span>opened<span> using Stourbridge Lion, </span>the first<span> locomotive to run on rails in the </span>United States<span>. It was also a coal </span><span>railroad. 

So the most one I can say is B-1830.</span>
vekshin14 years ago
3 0
Well it was i the 18 60's so it should be C.

You might be interested in
Describe homeostasis?
Ann [662]

Answer:

Homeostasis is the process of maintaining a constant internal environment of the body with the help of certain mechanisms such as feedback loops.

Explanation:

Homeostasis refers to the maintenance of a relatively constant internal environment of the body. It includes maintaining several parameters such as acid-base balance, blood glucose level, body' temperature, etc. within the narrow range.

Homeostasis is mainly maintained with the help of negative feedback loops wherein the deviation of any parameter from the normal physiological range is counteracted and restored.

For example, the blood glucose level remains within the range of 70 and 110 milligrams of glucose per 100 milliliters of blood under normal physiological conditions. Any deviation from the range is restored with the help of pancreatic hormones insulin and glucagon.

6 0
3 years ago
Transpiration is one part of the
KatRina [158]

Water Cycle is the answer

4 0
3 years ago
Which Characteristic Of Life Is Shown When a Eukaryotic Cell's Genetic Material Divides?
11111nata11111 [884]

The answer is B. Reproducing

5 0
3 years ago
Read 2 more answers
What is known as a state of equilibrium, in which biological conditions (such as body temperature) are maintained at optimal lev
nlexa [21]
Answer:  "homeostasis" .
_________________________________________________
6 0
3 years ago
Which stage of the cell cycle involves the division of the cell’s nucleus?
irinina [24]

Metaphase

At the end of the phase the cell divides into two new cells

3 0
4 years ago
Other questions:
  • What do you need to know to become an astronaut?
    13·1 answer
  • What is one of the primary functions of this food in the body?
    9·1 answer
  • Which system is BEST described by the functions listed below? 1. Gather internal and external sensory input 2. Process the input
    8·1 answer
  • 100 points hurry will mark as brainliest⁉️⁉️⁉️⁉️
    7·2 answers
  • The steps of meiosis 2
    10·1 answer
  • Please help asap! marking brainliest<br> its for a test :)
    12·2 answers
  • For what purpose is the mineral halite commonly used?
    14·2 answers
  • Which of the following best depicts energy flow in an ecosystem?
    6·1 answer
  • Probes that bind under very stringent hybridization conditions resulting in the differential binding over one nucleotide are cal
    10·1 answer
  • Ecosystems rely on what 5 components
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!