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
BARSIC [14]
3 years ago
8

A scientist wants to test whether the pH, salinity, and temperature of seawater impacts coral development. He sets up an experim

ent with three conditions: Aquarium 1: Normal pH, normal salinity, normal temperature Aquarium 2: High pH, high salinity, high temperature Aquarium 3: Low pH, low salinity, low temperature He finds that coral grow the least in Aquarium 2. He concludes that coral does not grow well in conditions with high salt. Why is this an invalid conclusion?
 The experiment does not have a control group.
 The experiment changes more than one variable at once.
 The experiment does not have an experimental group.
 The experiment does not measure any dependent variables.
Biology
1 answer:
romanna [79]3 years ago
4 0

The conclusion that coral does not grow well in conditions with high salt is invalid because (B)  The experiment changes more than one variable at once.

In order to correctly study the effect of three variables on there needs to be, 3 x 3 x 3 = 27 different aquariums (every variable takes 3 different values and there are 3 different variables).

In these aquariums, only one condition needs to be varied at a time to study its effect. To study the condition with high salt, the temperature and pH needs needs to be kept fixed at a particular value whilst varying the salinity from normal to low to high.  


You might be interested in
Is this a real person?​
crimeas [40]
What are you trying to ask?
5 0
3 years ago
Which scientist developed the system for classifying organisms
katovenus [111]

The Swedish botanist Carl Linnaeus is regarded as the father of taxonomy, as he developed a system known as Linnaean taxonomy for categorization of organisms and binomial nomenclature for naming organisms.


<em>Answer: Carl Linnaeus</em>


Hope this helps!

3 0
3 years ago
Orchidsare a recently evolved plant that have a novel feature know as aerial roots. What is the most likely function of an orchi
grin007 [14]

Answer:

"Aerial roots preserve water in the orchid. Aerial roots allow the orchid to attach itself to trees."

6 0
3 years ago
Which land feature supports the theory of continental drift?
sweet-ann [11.9K]

Answer:

The correct option is;

Canyons

Explanation:

The theory of continental drift, which was a 1596 hypothesis of Abraham Ortelius, is that the continents on Earth have had relative motion with one another over a period of geologic time such that the continents looks to haven drifting motion over the bed of the ocean

Evidence of the motion of the continents was first presented by Alfred Wegener in 1912 and continuing exploration of the ocean floor by Harry Hammond Hess has revealed that the there are lots of canyons, sea mountains such that the crust of the Earth moved apart on the facing sides of the ocean ridge which where evidence of sea floor spreading supporting the theory of continental drift.

9 0
3 years ago
Read 2 more answers
I did an assessment about an hour ago. I need to document it in flowsheets. What button do I click to add the past time?
Juli2301 [7.4K]

Answer:

Insert column button

Explanation:

In Flowsheets,

A given time column done for an assessment in the past is added to the flowchart by using the Insert column button.

The Add column button is to add the present time in a given assessment to the flowsheet.

5 0
3 years ago
Other questions:
  • In genetic terms what indicates that evolution is occurring in a population
    6·1 answer
  • Recent research on biological factors in suicide has linked it to low levels of the neurotransmitter _______ in the brain.
    12·1 answer
  • Ba-17 why are low head dams dangerous to small boats and paddle craft
    14·2 answers
  • When a plant generates food through photosynthesis, this food
    11·1 answer
  • Which biome has no large trees because much of the soil is frozen?
    14·2 answers
  • Suppose that a patient is diagnosed with a new disease caused by the buildup of waste material in the body’s cells. Which organe
    8·1 answer
  • Plant and animal cells differ in a variety of ways. Plants have a special structure that helps them produce their own food. With
    5·2 answers
  • What is the powerhouse of the cell?
    6·2 answers
  • A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: ex
    14·1 answer
  • Genes on the same chromosome are said to be __________.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!