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
Nady [450]
4 years ago
9

Why do scientists usually try to work without making the animals aware that humans are present

Biology
1 answer:
FromTheMoon [43]4 years ago
4 0

Answer:

In animal field studies, why do scientists usually try to work without making the animals aware that the humans are present? It is necessary to observe the animals without disturbing them. When a controlled experiment is not possible, why do scientists try to identify as many relevant variables as possible?

You might be interested in
Why can water pass through the cell membrane?
Alla [95]
Water can pass throught the cell membrane because, the cell membrane has little holes in the membrane allowing water to go through

8 0
3 years ago
how do you keep from getting disciplined at school? I got written up for tossing a pencil to my friend in class lol! Is that eve
Aloiza [94]
Mind the rules. Listen. Just be good? And Don't throw pencils. 
8 0
3 years ago
Read 2 more answers
Which of the following is NOT correct based on Darwin's theory of evolution?
ohaa [14]

Answer: A - some populations tend to overpopulate

Explanation:

4 0
3 years ago
Phosphorus in rivers can lakes sinks to the bottom and over thousands of years becomes ______ again.
pshichka [43]

Your question isn't the most clear, but I think your answer is rocks, or more specifically phosphorous rich rocks because the phosphorous will mix with the sediments on the river's/lake's ground forming phosphorous rich rocks.

That means that It'll become a phosphate mineral and later become phosphorous again when the minerals weather.



Hope it helped,



BioTeacher101

5 0
3 years ago
The metamorphic rock marble will dissolve in the presence of a weak acid. Which rock probably was changed into marble by the add
Crazy boy [7]

1. The correct answer is option D, that is, limestone.  

Limestone is mainly composed of calcite and the associated mineral dolomite. It is the calcite that gets dissolved in the presence of weak acid, and it is the limestone that changes into marble with the application of heat and pressure.  

2. The correct answer is option D, that is, cubic.  

The rock salt or halite, crystallizes into the isometric or cubic crystal system.  


8 0
3 years ago
Read 2 more answers
Other questions:
  • The receptor potential is generated at the _______. the receptor potential is generated at the _______. receiving region secreto
    15·2 answers
  • For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels
    11·1 answer
  • The two organ systems that regulate and maintain homeostasis are the
    8·2 answers
  • What are three ways global warming might affect the water cycle?
    11·1 answer
  • If you are performing site-directed mutagenesis to test predictions about which residues are essential for a protein’s function.
    9·1 answer
  • A baseball player was hit on the left side of his skull in the parotid area. He cannot close his eye and the corner of his mouth
    10·1 answer
  • What is the purpose of the biogeochemical cycles?
    9·1 answer
  • PLEASE ANSWER THIS... IF A PLANT IS GROWN IN A WINDOW, SHELF AND CABINET. 1. WHAT IS THE TEMPERATURE OF WATER? 2. FOAM HEIGHT AF
    14·1 answer
  • 20POINTS HELP!!
    11·2 answers
  • Living things must maintain a fairly constant pH balance because the pH level determines
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!