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
Tanzania [10]
3 years ago
13

A researcher is interested in the effects of nitrate and phosphate on plant growth and sets up an experiment in which groups of

five plants are given 1, 2, and 3 grams of nitrate and 1, 2, and 3 grams of phosphate in all combinations over a period of one month. The researcher measures plant height and weight at the end of the experiment. What is missing in this experimental design?
Question 9 options:

a control

an independent variable

a dependent variable

a constant
Biology
1 answer:
uysha [10]3 years ago
6 0

Answer:

an independent variable

Explanation:

You might be interested in
How do slime mold fungus move
svlad2 [7]
They reproduce through spores. However, there is one big difference between slime molds and fungi: slime molds move. ... A slime mold streams over bark and leaves, engulfing them. While it moves like an animal, it acts like a fungus.
3 0
3 years ago
Which of the following is a direct result of deforestation? (4 points)
prohojiy [21]

The direct result of deforestation is habitat loss.

<h3>What is deforestation?</h3>

Deforestation is defined as the purposeful felling of trees which are used for domestic use and the space created is used for agricultural purposes

The direct impact of deforestation is the effect it has on the arboreal habitat. The animals that live on trees have their habitats destroyed.

Learn more about deforestation here:

brainly.com/question/579463

#SPJ1

3 0
2 years ago
Most scientists describe biodiversity in terms of the number of species that have been discovered and described in scientific jo
ddd [48]

Answer:

The correct answer is option a. "For recombinant DNA technology or for the creation of synthetic life, only the gene that produces a particular desired product is needed, and not the entire organism that carried the gene".

Explanation:

Genetic biodiversity and population genetics are modern concepts related to the total number of discovered genes, which in the video Craig Venter explains that are around 20 million. The number of discovered genes are very important for scientific development because for recombinant DNA technology or for the creation of synthetic life, only the gene that produces a particular desired product is needed, and not the entire organism that carried the gene. Therefore, each new gene that is discovered or available, has the potential to be used in recombinant DNA technology developments.

8 0
3 years ago
The Piney Woods ecoregion in Texas receives more than 50 inches of rain each year and is home to many different species of plant
Marysya12 [62]

Answer:

long ansr ha but its question is wrong

8 0
3 years ago
Read 2 more answers
Can some one answer this questions please ​
MaRussiya [10]
B and c are the answer
4 0
2 years ago
Other questions:
  • It's a cloudy and rainy day. The air pressure is most likely _____. low, stable, high, increasing
    14·1 answer
  • A. Bacteriophage MS2 carries its genetic information in RNA. Its chromosome is analogous to a polygenic molecule of mRNA in orga
    9·1 answer
  • True / False: At very high-intensities, the body is forced to rely predominantly upon muscle stores because the availability of
    12·2 answers
  • How can one species be a sign (or indicator) that and ecosystem is healthy or unhealthy? Describe one example of an indicator sp
    6·1 answer
  • Energy is one of the underlying themes of science. Which of these best represents how the concept of energy will shape our futur
    12·2 answers
  • -essential body functions such as heartbeat, breathing, digestion, sweating, and sexual arousal are under the control of the
    14·1 answer
  • An uncharged atom of calcium has an atomic number of 20 and an atomic mass of 43. How many electrons does calcium have?
    7·1 answer
  • PLS HELP!!!!!!!!!! Describe the structure and function of the cell membrane.
    10·2 answers
  • Which of the following statements about the nitrogen cycle is false?
    12·1 answer
  • When levels of sodium in the blood are too low, which condition can occur?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!