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
Luden [163]
3 years ago
6

In the 11th century, a Chinese scientist named Shen Kuo was one of the first people to develop a theory of Earth's changing land

scape. From a number of observations, he concluded that some cliffs and other landforms are formed by the processes of erosion and deposition. About 800 years later, an American scientist named William Morris Davis developed his theory of the cycle of erosion, in which he reasoned that flowing rivers form and shape many landforms.
The example described above suggests that

A. people from different cultures and living at different times can contribute to scientific knowledge.
B. only people from Western Europe have developed useful scientific theories.
C. none of the scientific theories developed in the past have been accurate.
D. American scientists were the first to theorize that erosion can play a role in shaping land forms.
Biology
1 answer:
Annette [7]3 years ago
3 0

Answer:

A. people from different cultures and living at different times can contribute to scientific knowledge.

Explanation:

You might be interested in
What statement best compares photosynthesis and cellular respiration?
bixtya [17]

Answer:

b

Explanation:

8 0
3 years ago
Where in the plant are the hormones auxins produced? (Select all that apply.)
Bezzdna [24]

Answer:

Stems and root

Explanation:

Auxins facilitate stem elongation while inhibiting axillary bud formation, ensuring apical dominance. The root, branches, and stem and tip all contain them. Hydroxy Acetic Acid is a perfect example. Auxin is indeed a growth hormone that facilitates cell elongation and is formed in the stem tip.

5 0
3 years ago
Read 2 more answers
true or false. sugars and phosphates break off from the dna nucleotide to provide energy for dna replication.
Rainbow [258]

Answer:

<h2>false</h2>

Explanation:

<h2>the need of energy release or enargy addition</h2><h2>is debatable for any chemical reaction.</h2><h2>however with DNA replication. we are not adding</h2><h2>a nucleotide in a random process dispersing</h2><h2>energy to no avail.</h2>
8 0
2 years ago
What is a pacu fish's predators/dangers
Zepler [3.9K]

he Piranha is one of the most efficient predators on the face of the earth. Granted it is not a large animal, with most only reaching about 5 1/2 to 10 inches (14 – 26 cm), but it is known world wide for its ferocious nature. They have razor sharp teeth and are opportunistic carnivores.

A frenzied attack by a group of Piranha will set the water churning. They will attack and eat all sorts of aquatic animals, insects, lizards and amphibians. They will also devour rodents, carrion (dead meat), and sickly or weakened land animals that venture into the water.

The teeth of the Piranha are triangular in shape with an exact fit in their jaw, comparable to a bear-trap. They are designed to puncture and slice the flesh from their prey. They can strip their prey to the bone in a matter of minutes.

These fish are a great source of fascination. Their natural behaviors have become fodder for the scripts of moviemakers looking for a sensational twist to excite and entice an audience. What could be more intriguing than creating a 'fear factor' from the behaviors of these provocative fish found in the "wild". Yet just like the Great White Shark and the Anaconda constrictor, also popular subjects of thriller movies, the Piranha’s behaviors are over-fantasized.

The Piranha does engage in a feeding frenzy that will "make the water boil" if only because a hungry school of fish are trying to reach the same limited food source. All that activity is bound to create water turbulence. A Piranha school generally only consists of about 20 or so fish, but in a feeding frenzy it can reach up to several hundred..

Piranhas are not always that deadly. Many species live solitary lives once they reach maturity and only four or five species pose any significant danger. Piranhas rarely attack people. Many experts believe they are actually timid fish, and shoal for protection. Even the most aggressive are thought to be not really dangerous until they are trapped and confined, and then attack in self defense. As a pet they are fascinating and beautiful fish, yet you can't hold or pet them. They are not affectionate and owners must be extremely careful, especially when handling them. They do have sharp teeth and an aggressive/defensive nature. Most Piranha bites are sustained when the fish are being handled, though that's not to say a hungry fish is never dangerous.

7 0
2 years ago
Which of the following is not a product of the light reactions of photosynthesis? 1) NADPH 2) NADH 3) ATP 4) Oxygen
n200080 [17]

Answer:

The correct option is number 2. NADH is not  product of light reactions of photosynthesis.

Explanation:

The light energy from the sun is captured by the pigmented molecule, chlorophyll, of the plants. This light energy is converted into chemical energy by a serious of light-dependent reactions. The main products of light-dependent reactions are the energy molecule ATP and NADPH. Oxygen is released as a by-product during photosynthesis. Hence, all the option 1,3 and 4 are produced during the light reactions except for option 2 i.e NADH.

5 0
3 years ago
Other questions:
  • A CELL CAN ONLY GROW SO LARGE IN SIZE, BECAUSE
    10·2 answers
  • If a man has type ab blood and his wife has type o blood what is the probability that they have a type o child
    10·1 answer
  • The genetic molecule common to all living things is
    5·1 answer
  • Which procedure uses a CT scan to pinpoint the location of a mass in three dimensions and guide the biopsy needle?
    10·2 answers
  • Describe the structure of eukaryotic chromosomes
    11·1 answer
  • Growth patterns have been found in which of the following animals? Select all that apply.
    8·1 answer
  • What is the amino acid sequence resulting from this section mRNA?
    12·2 answers
  • Help on these 4 questions asap
    8·1 answer
  • Which are advantages of using renewable resources? Choose all that apply
    8·1 answer
  • Which of the following is NOT one of the key characteristics of a well-designed test?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!