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
Explain the process in which hormones secreted by the pancreas function with respect to increased glucose levels in the blood
KiRa [710]

Answer:

Gastrin: This hormone aids digestion by stimulating certain cells in the stomach to produce acid. Glucagon: Glucagon helps insulin maintain normal blood glucose by working in the opposite way of insulin. It stimulates your cells to release glucose, and this raises your blood glucose levels.

Explanation:

6 0
3 years ago
The equation shown represents cellular respiration. X + Oxygen → Y + Water + Energy What do X and Y most likely represent?
miv72 [106K]

Answer:

carbohydrate + oxygen = carbon dioxide + water + energy

6 0
3 years ago
Example of sex linked traits
hjlf

male tesosterone can affect facial hair, voice deepness, testicle size, muscle mass, agressiveness, etc

8 0
3 years ago
PLEASE HEP NOT SUREEEE
notka56 [123]
The fatty acid sequence determines its shape because it helps shape them
4 0
3 years ago
Eukaryotic cells are compartmentalized into ____________ , which is not characteristic of prokaryotes. the chromosomes of eukary
likoan [24]
The first blank is organelles, the second blank is nucleus, the third blank is eukaryotes, the fourth blank is mitochondria, and the fifth blank is flagella.

Hope this helped!!
5 0
3 years ago
Other questions:
  • In many plants, stomata are found only on the lower surface of the leaf. The most likely explanation for this fat is that
    12·1 answer
  • Gh
    13·1 answer
  • Interior layer of the Sun where hot and cooler gases circulate. A:convective zone B:chromosphere C:radiative zone D:corona
    10·1 answer
  • Nearly all cells found in multicellular organisms have similar needs. as a result, most organisms have developed similar _______
    13·2 answers
  • As blood begins to circulate, it leaves the _________ from the left ventricle and goes into the aorta.
    11·2 answers
  • Examine the graph of Julia's water intake (in cups) over the course of one week. Julia tracked her water intake and urine output
    8·2 answers
  • Describe one important piece of machinery in plant cells, and how that machinery helps keep plant cells alive. Pleas help. This
    13·2 answers
  • Yall Im struggling, if u cant read it, the question is “why does a mountain climber need an oxygen supply at very high altitudes
    10·1 answer
  • What is the difference between the tissue and the organ?
    7·1 answer
  • CAN SOMEONE DO A CER ON WHY TREES MASS COMES FROM AIR
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!