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
Bas_tet [7]
2 years ago
9

A scientist performs an experiment to see how plants respond to acid rain. He places the water plants in water of varying pH mea

surements. The pH levels are 2.5, 6.0, 7.0, and 9.0. Each day, he measures the health of the plants by counting the number of leaves on the plant. The plants used in this experiment typically grow in water at a neutral pH.
Why was only one variable tested in this experiment?

The scientist tested one variable to determine what caused the number of leaves to change.
It just happened that way; you can test as many variables as you want.
The scientist ran out of materials so he tested only one variable.
The scientist tested two variables.
Biology
1 answer:
krok68 [10]2 years ago
3 0

Answer:

The scientist tested one variable to determine what caused the number of leaves to change.

Explanation:

You might be interested in
Which scientist first made a model of the atom with subatomic particles?
sasho [114]
JJ Thompson discovered subatomic particles, focusing mainly on the electron
6 0
3 years ago
Choose all the right answers.
FinnZ [79.3K]

Answer:

go through a metamorphosis

Explanation:

METAMORPHOSIS is the change in the form and often habits of an animal after the embryonic stage during normal development.

For Example: the transformation of a caterpillar into a butterfly, OR a tadpole into a frog.

Note that the other options given are WRONG because they are characteristics or features of either of them, NOT both.

6 0
3 years ago
If a polygons is an octagon then it has eight sides
Delicious77 [7]

Answer:

This is true.

Explanation:

An octagon is a type of polygon that has (8) sides.

7 0
3 years ago
Big cats like tigers and other carnivores are often the top predators in an ecosystem. To which trophic level do they most likel
Lesechka [4]

Answer:

tertiary consumers because they are also the one who eats secondary consumers.

3 0
2 years ago
Read 2 more answers
Which of Earth's layers is formed by volcanic activity?
mojhsa [17]
I believe it is the crust 
5 0
3 years ago
Other questions:
  • Need help pleasee anybody
    8·2 answers
  • What are two raw materials necessary for the process of photosynthesis?
    11·1 answer
  • Which two metals make up both parts of the core?
    12·1 answer
  • A pathologist who wants to examine a patient's liver cells to determine if the mitochondria have an internal structural defect w
    7·1 answer
  • What is required for heat transfer using conduction? A. Light B.Contact C.Fire D.Waves
    6·1 answer
  • For each levels of classification for an organism, describe what it is made up of and the relation to the functions.
    5·1 answer
  • 1. Sugar beets plants start from tiny seeds and grow to be large plants. Where does the bulk of their mass come from? A. nutrien
    15·1 answer
  • What do the letters inside and outside the punnett square represent?
    7·1 answer
  • What are the types of pollination? How is one advantages over the other method?
    15·1 answer
  • Please help I’ll mark you as brainliest if correct!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!