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
Anton [14]
3 years ago
5

What happens when a penny is dropped from a height of 20 meters?

Biology
1 answer:
Dmitrij [34]3 years ago
4 0

Answer:

#1.The force of gravity causes it to accelerate

Explanation:

As acceleration is the rate of change in velocity of an object with respect to time. ... The acceleration of penny is due to the force of gravity. Thus, we can conclude that the force of gravity causes it to accelerate.

You might be interested in
In the image below, what kind of molecules does the label A represent?
Marina CMI [18]
Answer : Oxygen molecules

4 0
3 years ago
Read 2 more answers
You are interested in studying a gene called CFTR because mutations in this gene in humans cause cystic fibrosis. You have made
Juliette [100K]

Answer: Both the mouse and human beings are encoding the proteins having similar functions.

Explanation:

The CFTR gene in the mouse and CFTR gene in the human beings encode proteins that perform similar function,this is so because if the results are same then it means that both mouse and human beings are encoding the protein that have similar function.

Option A is incorrect  because both humans and mouse are eukaryotes so they have introns and because of that even if the gene sequences are different they can still encode protein.

Option B is incorrect because  amino acid sequences can be similar inorder to have the similar function. If glutamic acid is replaced by aspartic acid, it won't have different function the function will remain same. So, identical amino acid sequences are not required. They can be similar too.

8 0
2 years ago
Which type of rock can turn into a sedimentary rock?
Darya [45]

Answer:

The answer is D.) igneous or metamorphic.

Explanation:

4 0
1 year ago
Cindy hypothesizes that if she adds salt to a weak acid, then its pH will be lowered. She develops the following experiment to t
Alisiya [41]
Measure the pH of solution in each beaker.
8 0
3 years ago
Read 2 more answers
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>

5 0
3 years ago
Other questions:
  • Which question about dinosaurs is a scientific question?
    5·2 answers
  • Divergent boundaries are characterized by explosive lava flow.<br><br> true or false
    15·1 answer
  • How can the hypothalamus receive signals from both the nervous and endocrine systems?​
    8·1 answer
  • A ____ is a whole number that has exactly two whole-number factors:1 and itself
    13·2 answers
  • Mercury pollution in a local lake can be traced directly to a factory located near the lake's shore. What type of pollution is t
    12·1 answer
  • Each member of the human hemoglobin gene family, which consists of seven genes arranged in two clusters on different chromosomes
    10·1 answer
  • Scientists have discovered fossils on an island. What type of rock are they most likely examining?
    15·1 answer
  • Since all living organisms use the same four nucleotides in DNA structure, what is it that makes individuals unique?
    11·1 answer
  • Genes and chromosomes are microscopic and difficult to observe. How does the simulation and model help in understanding how trai
    11·1 answer
  • Citrus has always been the most important crop in Florida.<br> True<br> False
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!