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
Mariana [72]
2 years ago
11

Starfish, sea stars, and sea urchins are classified as echinoderms. What does the prefix "echin-" mean?

Biology
1 answer:
faltersainse [42]2 years ago
8 0

Answer:

The prefix "echin-" means D. The prefix "exo" means outside/external.

Explanation:

You might be interested in
An oak tree can be a home for animals like squirrels, birds, etc. as well as provide oxygen for the environment. This is an exam
pantera1 [17]

Answer:

C

Explanation:

A Niche is the role an organism plays in its environment.

7 0
3 years ago
Read 2 more answers
A student wants to know what effect temperature will have on the germination rate of radish seeds.  To test this, she obtains 3
kondaur [170]

Answer:

Hypothesis: IF the temperature is high, THEN the germination rate of radish seeds will increase.

Experimental Group: 20 Seeds in petri-dishes placed in the freezer and incubator each

Control Group: 20 seeds stored at room temperature

Manipulated Variable (IV): TEMPERATURE

Responding Variable (DV): GERMINATION RATE

Constants: Amount of water, same amount of time (2 weeks)

Explanation:

- The hypothesis is a testable explanation given to an observed problem. A possible hypothesis is IF the temperature is high, THEN the germination rate of radish seeds will increase.

- Independent or manipulated variable is the variable that is changed or manipulated variable in an experiment. The TEMPERATURE is the independent variable in this case.

- Dependent or responding variable is the variable that is measured in an experiment. In this case, the dependent variable is the GERMINATION RATE

- The experimental group is the group that receives the experimental treatment. In this case, the experimental group is the 20 Seeds in petri-dishes placed in the freezer and incubator each.

- The control group is the group that does not receive the experimental group. In this case, the control group is the 20 seeds stored or placed at room temperature.

- Constants are the variables that are kept unchanged throughout the experiment. In this case, the constants are Amount of water, same amount of time (2 weeks)

8 0
3 years ago
The peripheral nervous system affects __________ while the central nervous system is associated with _______________.
alexandr402 [8]
The peripheral nervous system controls your muscles and joints and it sends messages back to your brain. <span>It manages temperature and digestion too. The central nervous system controls the brain and the spine. </span>
8 0
2 years ago
Read 2 more answers
The division of the nervous system that connects the brain and spinal cord to the rest of the body is the __________ system.
Montano1993 [528]
Central Nervous System (CNS)
3 0
2 years ago
Phagocytes have a pathogen-recognition system known as _____________ that leads to the recognition, containment, and destruction
bearhunter [10]
I'm pretty sure its, pattern recognition receptors.
5 0
3 years ago
Other questions:
  • If a robot fixed another robot is it a Engineer Or doctor?
    6·2 answers
  • What is an adaptive advantage of recombination between linked genes?
    7·1 answer
  • Where are strata volcanoes commonly found? What type of<br> plate boundary are they near?
    14·1 answer
  • It is thought that cause past Ice Age climate
    7·1 answer
  • Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma
    7·1 answer
  • Sheena wants to measure the volume of a ball that is 24cm across. how should she set up her equation
    11·1 answer
  • A man of healthy weight may have, on the average, ____ percent of his body weight as fat.
    9·2 answers
  • How does inorganic nitrogen from the atmosphere<br> (N2) get into living systems?
    8·1 answer
  • Fifteen degrees on a globe represents _____.
    10·2 answers
  • We're do volcanoes usually form please help me A within 10 miles of the ocean B between earths mantle and core C at fault lines
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!