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
MArishka [77]
3 years ago
9

Which of the following is a direct observation? A. Music may help plants grow B. The plant is 22cm on day 23 C. two plants must

have died from insects D. The plants will likely grow 2cm per day 2. A new fertilizer is being tested to determine if it will help plants grow. Each day the researcher gives fertilizer to half the plants and measures the height of all plants. This is an example of which step in the scientific method? A. Ask a question B. Conduct the experiment C. Form a conclusion D. From a hypothesis
Chemistry
2 answers:
Marizza181 [45]3 years ago
8 0
The answer is B for number 1 because rather than it being an observation it is something that you know for sure happened without guessing. 

the answer is B the researcher is actually adding the fertilizer and measuring it.
s344n2d4d5 [400]3 years ago
8 0

Answer:

The correct answer will be options:

1. option-B

2. option-B

Explanation:

<u>Case I </u>

Making an act of direct observation is a way of collecting information in which the observer observes a natural behavior in its natural environment without making assumptions.

In the given questions, the case of direct observation will be when the height of the plant is measured on 23rd day. Thus, Option-B is the correct answer.

<u>Case II </u>

In the given question, the researcher wants to determine the effect of fertilizer on the growth of the plant so he decides to perform an experiment by giving fertilizers to plants.

This is an act of performing an experiment and thus Option-B is the correct answer.

You might be interested in
When can I use ideal gas law?
Elis [28]
Answer:

The ideal gas law can be used in stoichiometry problems in which chemical reactions involve gases. Standard temperature and pressure (STP) are a useful set of benchmark conditions to compare other properties of gases. At STP, gases have a volume of 22.4 L per mole.
3 0
3 years ago
Find the mass of 1 atom of Chlorine in gram.
vazorg [7]
B. 35.45 ! Hope this helps
6 0
3 years ago
Which of the following is soluble in water (A-sand) (B-pepper) (C- oil) (D-honey)​
iren2701 [21]

Answer:

D- Honey

Explanation:

Honey is naturally water-soluble and oil is non polar meaning it is not attracted to water. Sand and pepper are insoluble.

8 0
3 years ago
Read 2 more answers
How have observations in the sky enabled humans to explore and travel?
andre [41]

Answer:

Observations of the sky allowed explorers to mark the passage of time both in hours and through the months of the year. Early astronomers also realized that the night sky does not look the same from different places on the Earth.

4 0
2 years ago
Please help!!!
Effectus [21]
D

B

C

D

I don't think all these answers are right but Those are my best answers
8 0
3 years ago
Read 2 more answers
Other questions:
  • You make dilutions of curcumin stock solution and measure the absorbance of each dilution to obtain the following data: Conc. (M
    12·1 answer
  • If 0.0262 mol of cacl2 is dissolved in water to make a 0.520 m solution, what is the volume of the solution?
    13·1 answer
  • Which of the following is the correct formula for nitrous acid? a) HNO b) HN2O c) N2O d) HNO2 e) HNO3
    9·1 answer
  • Energy does not have to involve motion.<br> Question 8 options:<br> True<br> False
    8·1 answer
  • 0.30 kg cart moves on an air track at 1.2 m/s.It collides with and sticks to another cart of mass 500 g,which was stationary bef
    14·1 answer
  • Label the following as a pure substance or a mixture.
    9·2 answers
  • An amphoteric species is neither an acid nor a base. True or False
    13·1 answer
  • The volume of a metal rod was determined to be 38.6 mL. Its
    12·1 answer
  • state two methods that can be used to prepare chlorine from rock salt.write an equation in each case​
    5·1 answer
  • What is the mass of one mole of product? (Remember the law of conservation of mass)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!