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
nirvana33 [79]
4 years ago
8

Johannes wants to know whether soil, water, or both are needed for plant growth. He chooses to conduct experiments on a willow t

ree for five years to answer his question. How can his experimental methods be changed to improve his experiment?
Biology
1 answer:
Orlov [11]4 years ago
7 0
He needs to use a larger sample size  <span>to improve his experiment.</span>
You might be interested in
A plant with small, red flowers is crossed to a plant with large, white flowers. The resulting F1 is comprised of 75 plants with
lions [1.4K]

Answer:

the large white flower is heterozygous (Ff)

Explanation:

7 0
3 years ago
A woman has blood type a mm. her child has blood type ab mn. the blood types of the potential fathers are given below.
goldfiish [28.3K]
The mother has the alleles A and M, given that her blood type is A MM. Since the child has blood type AB MN, then the child has the alleles A, B, M, N. However, the alleles B and N, cannot have come from his/her mother and must have come from the father. Therefore, we are looking for a father with the alleles B and N. Based on this conclusion, the child's father is either Tom (with blood type AB MN) or Bill (with blood type B MN).
5 0
3 years ago
A diagram of chloroplast stroma and thylakoid lumen showing chemical energy, ferredoxin, ferredoxin-N A D p reductase, A D P syn
antoniya [11.8K]

Answer:

If the electron transport system did not work, electrons from PSII would not be transferred to PSI. Ferredoxin would then have no electrons to transfer to NADP+ so NADPH would not be produced. This would also affect the light-independent reaction of photosynthesis because NADPH is needed in this reaction.

Explanation:

Edgenuity's Answer.

4 0
3 years ago
The nitrogen cycle is most directly dependent upon-
vovangra [49]

Answer:

B) Nitrogen-fixing bacteria and lightning

Explanation:

Nitrogen cycle is the natural process in which atmospheric nitrogen is converted into nitrite and nitrate with the help of bacteria.

Nitrogen cycle is directly dependent on nitrogen-fixing bacteria and lightning.

As bacteria are responsible for most of the chemical conversion in the nitrogen cycle such as nitrogen fixation (first step) is done by soil bacteria (Cyanobacteria) that form ammonia, which is toxic to plants; nitrification in which ammonia is converted into nitrites and nitrates with the help of Nitrobacter and denitrification bacteria involve Pseudomonas, and Achromobacter which convert nitrite and nitrate into nitrogen.

The lightning breaks nitrogen molecules and allow  it to combine with oxygen in atmosphere which further dissolve in rain and form nitrates.

Hence, the nitrogen cycle is most directly dependent upon nitrogen-fixing bacteria and lightning and the correct option is B.

5 0
3 years ago
The major buffer in blood is composed of the weak acid carbonic acid (H2CO3) and its conjugate base, bicarbonate ion (HCO3 - ).
tatuchka [14]

Answer:

The increase in the amount of  carbon dioxide in in blood will lead to respiratory acidosis

Explanation:

Carbon dioxide in its normal level between  38 to 42 mm Hg plays vital roles in the human body like regulating the PH of the human blood, breathing regulation and other things. If the amount of carbon dioxide is high more than the range level, it will cause what is called respiratory acidosis.

Respiratory acidosis is a situation in cause by decrease in ventilation i.e Oxygen level leading to increase in carbon dioxide and drop in PH level of the blood.

6 0
3 years ago
Other questions:
  • Explain why the farmer in the scenario below failed to grow crops.
    6·1 answer
  • In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh
    15·1 answer
  • which of the following is true biased thinking promotes scientific ideas open - restricts scientific thinking creativity Foster
    12·2 answers
  • A chlorine atom reacts with a sodium atom to form sodium chloride, NaCl. A chlorine atom can also react with another chlorine at
    10·2 answers
  • I don't usually ask questions for school, I'm just curious. Well, if you look up 'savant syndrome', you'll understand this bette
    11·1 answer
  • What is meant by crop rotation?
    15·1 answer
  • Which of these landforms is not common in an area of karst topography
    13·1 answer
  • which two statements describe disadvantages of selective breeding? this is my 5th time asking please help me. ​
    13·1 answer
  • Please help<br> 1) What process determines the<br> potential of species to<br> increase in numbers?
    15·1 answer
  • The study of the evolutionary history of lineages of organisms is known as.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!