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 environmental factors and heredity affect personal health?
yKpoI14uk [10]

Answer:

our parents used to be like us and harm the environment but now after generation of harming the environment the environment is dying and if it dies we die to.

Explanation:

facts.

5 0
3 years ago
Read 2 more answers
One adaption to life in flowing water is what?
Alla [95]

Answer:

Explanation:

There are many options, here are a few choices:

Fast moving water tends to be colder than slow water; some of it originates as snow melt on the sides of mountains, for example. For this, animals in fast water tend to be more cold resistant. This is why you do not see fish like freshwater trout in equatorial regions. These animals struggle and die in slow, warm water.

Fast moving water means that if the animal or plant wants to stay put, it must resist the flow. Fish tend to be far more muscular and lean in these places, while insects like stoneflies, mayflies, and other larvae have ways to secure themselves to rocks and plants while growing. Plants develop strong root systems, and algae hold fast in rocky crevices in the river. Some animals also have suction in order to stay in place where there is fast flowing water.

Some animals have to adapt their reproductive systems as well. Because finding a mate is difficult in the sweeping waters, breeding tends to happen all at one time. As an example, salmon have runs, where thousands of fish all swim upriver at once to breed, can dramatically alter the surrounding ecology of the river. Insects like mayflies have hatches, where hundreds of thousands of flies swarm into the air at once to breed and lay eggs.

5 0
3 years ago
Women of Adamant, fair neophytes— Who thirst for such instruction as we give, Attend, while I unfold a parable. The elephant is
shutvik [7]

Answer:

This excerpt is an example of blank verse.

8 0
3 years ago
Read 2 more answers
8. What base in DNA pairs with adenine?<br> A cytosine<br> Buracil<br> C thymine<br> D guanine
blondinia [14]

Answer:

C. thymine

Explanation:

Adenine pairs with thymine in DNA and pairs with uracil in RNA.

Hope it helps.

4 0
3 years ago
Please help me, anything will help. I think 5 is B.
Alekssandra [29.7K]
5 is b because it makes more sense
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which statements correctly describe the inheritance pattern for the alleles that control blood type?
    11·2 answers
  • Given that,
    11·2 answers
  • what type of bird did darwin notice there were many different species of with variations in their beaks?
    8·1 answer
  • Which two planets have 53 moons? 1)Earth and Mercury 2)Jupiter and Saturn 3)Mercury and Mars 4) Neptune and Jupiter
    13·2 answers
  • Im kinda lazy ]and i blew all my money on fiverr so I need help all of them plz
    5·2 answers
  • Translation is the
    7·2 answers
  • Will give brainiest if i can
    7·1 answer
  • How does pollution affect biodiversity
    7·1 answer
  • What is ONE way in which geologists may utilize GPS and satellite mapping?
    13·1 answer
  • 3. Bacteria and fungi are decomposers, and are responsible for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!