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
Lostsunrise [7]
2 years ago
12

What happens to urchins if the oxygen percent concentration drops too low for an extended period of time?

Biology
1 answer:
makkiz [27]2 years ago
7 0

Answer:

Since sea urchins are picky, they are used as indicator organisms in public aquariums to determine if the system is functioning properly. This is because they are very "picky" about water quality. If the water is contaminated, the sea urchins will be the first to show signs of stress, spines laying down or falling off. Do use an aquarium filter and do clean up the day after feeding. Any metal exposed to the seawater will corrode and poison the tank. A dying sea urchin will often spawn out and rot out, causing the others in the tank to spawn and die as welll.

Explanation:

You might be interested in
What is the primary fuel for the body?<br><br> carbohydrates<br> lipids<br> protein<br> glycogen
Fynjy0 [20]

It's the glycogen.

Glycogen is a complex molecule made from glucose, it's a ramification of about 12 to 18 molecules of glucose, and it's the metabolic energy reserve.

When we need energy, the first to get metabolized is glycogen.

You can find most of the glycogen in the liver and a bit in muscles.

5 0
3 years ago
Which of the following does not accurately depict a scientific theory? A. Theories are tested over and over again. B. Theories a
Colt1911 [192]
Scientific theories are not absolute and unquestionable truths: they are the best explanation of the data, but they can be challenged if new data is discovered or if a new theory is found that fits to and explains the data even better! 
The best answer is d: this is not an accurate description of a scientific theory!

Shoutout to @WorldCitizen 

Have an amazing day!

5 0
2 years ago
Read 3 more answers
The bacteriologist Sir Alexander Fleming was engage in the study of staphyococcus a kind of bacteria that wa being grown in petr
11Alexandr11 [23.1K]
The problem is that mold was growing in some of the dishes. The hypothesis is that the mold can cure bacteria.
4 0
3 years ago
Identify the items that are part of an ecosystem. Check all that apply.
Bumek [7]

ecosystem:

Living and Nonliving Things in the Ecosystem. Ecosystems -- biological communities -- include living organisms like animals, plants, insects and bacteria, as well as nonliving components like rocks, soil, water and sunlight.

8 0
3 years ago
Read 2 more answers
First answer gets thanks and 5 stars
Fiesta28 [93]

Answer:

i think the answer is C Gravitational potential energy

Explanation:

im not sure but i think this is the right answer

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which land formation is the result of a convergent boundary? A. central United States B. South American volcanoes C. Hawaiian vo
    15·2 answers
  • After fertilization, the zygote contains 28 chromosomes. what is the number of chromosomes present in the gametes?
    7·1 answer
  • A report claims that the greenhouse effect started with the Industrial Revolution in Europe when gases, such as carbon dioxide,
    12·2 answers
  • Examine the air pressure map.
    5·2 answers
  • Where is most of a healthy persons fat stored
    10·2 answers
  • PLEASE HELP!! ASAP.
    15·1 answer
  • What is a biotic factor?
    12·1 answer
  • TRUE or FALSE: Insulin and Glucagon
    10·2 answers
  • 2. Where do koalas carry their infants right after their birth? After 6 months,
    5·2 answers
  • Explain why the overall charge on an atom is zero
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!