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
4vir4ik [10]
2 years ago
8

3. Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks.

Biology
1 answer:
Over [174]2 years ago
7 0

Answer:

This question is asking to identify the following:

Independent variable: Different humidity levels

Dependent variable: Height of the plant

Control group: Tree left outside in normal conditions

Controlled variable: same time of measurements (once in a week), same types of trees

Explanation:

Independent variable is the variable that the experimenter changes or manipulates in an experiment. In this experiment, three redwood trees are kept at different humidity levels. Hence, the independent variable is the DIFFERENT HUMIDITY LEVELS the redwood trees were kept at.

Dependent variable is the variable that is measured in an experiment. It is the variable that responds to the changes made to the independent variable. In this case, the HEIGHTS of the trees measured is the dependent variable.

Controlled variable or constants are those variables that must be kept unchanged throughout the experiment for all groups. In this experiment, the constants are: same time of measurements (once in a week), same types of trees (redwood).

Control group is the the group in an experiment that does not receive experimental treatment. In this case, the group that does not receive treatment/control group is: Tree left outside in normal conditions.

You might be interested in
Food contains a sugar called , which is broken down in a process called cellular . This process uses to break down food molecule
Law Incorporation [45]

Answer:

I think it is glucose.i hope this helps!

Explanation:

6 0
3 years ago
Read 2 more answers
Crossing over is a very important event in prophase 1 of meiosis! What happens during crossing over and what is the significance
erica [24]

The term ‘Crossing over’ was used by Morgan and Cattell. It is a process in which there is exchange of chromosome segments between non-sister chromatids of a homologous chromosomes. It occurs during pachytene stage of prophase I of meiosis cell division.

Significance of crossing over:

  • Crossing over provides genetic variation in all sexually reproducing organisms.
  • It creates new combination of genes or genetic recombination and produces hybrids.    

4 0
2 years ago
Scientists tested the effect of a fertilizer on the growth of plants. They had 2 sets of plants, Group A which gets fertilizer,
fiasKO [112]
1. This scenario is controlled due to the fact that they usually <span>test the effect of fertilizer, water and sunlight. Two last points pose as explanation for the second part of question.
2. It </span>can not be considered a theory because often it is supported by <span> hypothesis, so it's not direct thesis.
3. The way to know </span>that the y-axis is measuring the growth of the plant is to look at the graph and see that it <span>shows  plant growing up.</span>
8 0
3 years ago
Are camels more related to koalas or hawks? Explain.
sineoko [7]

Answer:koalas

Explanation:hawks lay eggs and have feathers while koalas have amniotic eggs (meaning live birth), and fur like camels. this means that hawks are more distant on a cladogram and have less relation to each other

alsooo pls mark brainliest

4 0
2 years ago
Which of the following is a complex relationship between organisms and their environment?
vovikov84 [41]
The answer is A,hope this helps !
6 0
3 years ago
Other questions:
  • Sleepwalking is most likely to be associated with ________ sleep. nrem-1 sleep rem alpha sleep nrem-3 nrem-2 sleep
    12·1 answer
  • Where does the glucose necessary for cellular respiration to occur come from?
    9·1 answer
  • How does the nonpolar nature of lipids contribute to their insulating quality
    11·1 answer
  • What are fern leaves called?
    15·1 answer
  • Which of these is a piece of evidence supporting the theory of evolution?
    12·1 answer
  • How is blood pressure measured?
    13·1 answer
  • an artery ______________________. a. brings blood back toward the heart b. has valves that prevent blood from flowing backward c
    13·1 answer
  • Zebra mussel predators
    8·1 answer
  • How does a mouse reproduce ?
    5·1 answer
  • For the roller ball, create a subset of messaging/marketing that speaks to this product specifically.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!