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
Angelina_Jolie [31]
3 years ago
6

A student wants to answer the question "Does adding calcium powder to soil make pea plants grow faster?" She adds calcium powder

to the soil of 12 plants and does not add it to the soil of a second group of 12 plants. She measures the growth of all of the plants in each group for a month. Which statement best summarizes the factors that need to be controlled in this experiment?
A) All plants should be the same age and health and be given equal amounts of water and sunlight.
B) All plants should be placed in separate, equal-sized pots on the same table, where they receive the same amount of sunlight.
C) All plants should be watered in the morning at the same time each day, and given the same amount of soil and sunlight.
D) All plants should be the same health and be given equal amounts of water, calcium, and sunlight.
Biology
1 answer:
attashe74 [19]3 years ago
8 0

Answer: the correct answer is A) All plants should be the same age and health and be given equal amounts of water and sunlight.

You might be interested in
HELP ME WITH THIS 2 PLZ
Aliun [14]
The first option for 1 and the second option for 2
7 0
2 years ago
Read 2 more answers
How many organ systems are in the human body?
VashaNatasha [74]
There are 11 major organ systems in the body.
4 0
3 years ago
Read 2 more answers
If ammonia is used as an energy and electron source by a bacterium, that bacterium would be considered a ___.
zhuklara [117]

If a bacterium uses ammonia as an energy as well as electron source, it is classified as lithotrophic chemotrophic.

<h3>Descriptive terms for lithotrophic chemotrophic:</h3>

Humans, fungi, and also many prokaryotes are chemotrophs that get their energy from organic chemicals. Lithotrophs are chemotrophs that obtain energy from inorganic substances such as hydrogen sulfide (H2S) as well as reduced iron. Lithography is a microbiological phenomenon that is unique in the globe.

<h3>What is the difference between chemoautotrophs and chemolithotrophs?</h3>

Chemotrophs are creatures that get energy from their surroundings by oxidizing electron sources. These compounds might well be organic (chemoorganotrophs) or inorganic (chemoorganotrophs) (chemolithotrophs). The term chemotroph is used in contrast to phototroph, which uses solar energy.

To know more about chemotrophic visit:

brainly.com/question/765577

#SPJ4

3 0
9 months ago
What are the three major steps involved in mRNA processing?
LenaWriter [7]
Splicing, adding of the cap and tail, and the exit of the mRNA from the nucleus.
4 0
2 years ago
Trace the ductal pathway from the epididymis to the urethra. (Module 26.5C)
iragen [17]

Answer:

epididymis

ductus deferens

ampulla of ductus deferens

seminal gland

ejaculatory duct

urethra

Explanation:

Epididymis is a tube that connects the back side of the testicles to the vas deferens (ductus deferens). The vas deferens is the connecting link between epididymis and urinary tract/urethra and is responsible for transporting sperm to the urethra. Seminal vesicles are small glands that lie above the prostate gland and make up more than 50% of the total semen. Seminal vesicles are connected to the vas deferens through ejaculatory duct. This duct empties sperm and semen into the urethra

Hence, the correct order is

epididymis

ductus deferens

ampulla of ductus deferens

seminal gland

ejaculatory duct

urethra

6 0
3 years ago
Other questions:
  • Which of the following is part of the brain stem?
    12·1 answer
  • Think about a bush in your back yard. Is it alive according to the characteristics of life? Why or why not
    8·2 answers
  • Give the names of two part of the leaf cell that would not be found in a human liver cell.
    8·2 answers
  • What is not an ocean resource ?
    10·1 answer
  • Students want to find out at which temperature bean plants grow the tallest. Which science process skill would be used to find t
    15·1 answer
  • 13) Which molecule is used by cells as an energy source?​
    5·1 answer
  • An acticie abuat of The last farewell Dr jose rizal
    11·1 answer
  • How does carbon affect your life?
    8·2 answers
  • What was John’s hypothesis in the experiment? The hypothesis should make a prediction of the outcome of your experiment and shou
    8·1 answer
  • Substances that plug up an enzymes active site and prevent reaction from occurring are:_______
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!