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
frozen [14]
3 years ago
10

A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings

?
A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A.
respiratory and muscular systems
B.
skeletal and digestive systems
C.
respiratory and digestive systems
D.
skeletal and muscular systems
Biology
1 answer:
Montano1993 [528]3 years ago
6 0

Answer:

D

Explanation:

skeletal and muscular systems

You might be interested in
I need help please!
wolverine [178]

Answer:

50%

Explanation:

So the cross is hh x Hh

Making a punnet square would get Hh,hh,Hh,hh

The percent of babies that will have Hh is 50%

4 0
3 years ago
Forming a hypothesis is the first step of the scientific method.
exis [7]

Answer:

The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false. Step 2. Form a hypothesis.

Explanation:

The hypothesis is an educated guess as to what will happen during your experiment. The hypothesis is often written using the words "IF" and "THEN." For example, "If I do not study, then I will fail the test." The "if' and "then" statements reflect your independent and dependent variables

4 0
3 years ago
True or False: Good graphs should have a descriptive title that includes both variables.
Anna007 [38]
The answer is true they should have both
8 0
3 years ago
Which kind of disturbance is most likely to precede primary succession?
inessss [21]
Visual disturbance is the most likely to precede primary succession
4 0
3 years ago
Read 2 more answers
What are the three traits of organism in the kingdom animal
Irina18 [472]

Answer:

Have an extra one.

Explanation:

  1. Animals are multicellular.
  2. Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances.
  3. Animals typically reproduce sexually.
  4. Animals are made up of cells that do not have cell walls.
8 0
3 years ago
Other questions:
  • Witch of these is an organic nuterents.
    12·2 answers
  • In the process of digestion, proteins are broken down into _______, while carbohydrates are broken down into ____
    12·1 answer
  • What would happen if there were no abiotic (nonliving) factors in an ecosystem?
    8·1 answer
  • Flatworms have no need for circulatory and respiratory systems because
    10·1 answer
  • What would be a limiting factor in an ecosystem?
    14·2 answers
  • The apoplast in plant tissues consists of:________. a. cell walls, extracellular spaces, and vessel elements b. cell walls, extr
    13·1 answer
  • A combined sewer system carried___ to a sewage treatment plant. A. Household waste water B. Rain water C. Lawn run of D. All the
    5·1 answer
  • What are recessive alleles?
    15·2 answers
  • Create a Map
    7·1 answer
  • DNA definition in your own words
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!