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
Cerrena [4.2K]
3 years ago
8

Crabs are organisms that have five pairs of legs. In certain species of crabs, the fifth pair of legs has a flattened, paddle-li

ke shape. Which of the statements below best explains how this adaptation has evolved?
A.Crabs were exposed to a toxin in the water.


B.Crabs with this adaptation have an advantage over other crabs to defend against predators in oyster beds.


C.Crabs needed this adaptation to dig into sand to find food so they developed the flattened paddle-like shape.


D.Crabs developed this adaptation because they needed to climb mangrove trees to hide themselves from predators.
Chemistry
1 answer:
Katyanochek1 [597]3 years ago
3 0

Answer:

A

Explanation:

Crabs were exposed to a toxin in the water.

You might be interested in
Global winds are directly caused by the Earth's rotation and
Natali5045456 [20]

Answer:

A the uneven heating of earths surface

Explanation:

Because earths rotates on its axis, circulating air is deflected torward the right in the northern hemisphere and toward the left Southern Hemisphere. This is called the coriolis effect

5 0
3 years ago
How many grams of carbon are present in 45.0g of CCl4
pentagon [3]
Molar Mass of CCl4= 12+4(35.5)=154 g/mol    g Carbon= 45.0g/(154 g/mol)=0.292 mole



6 0
3 years ago
What is the molarity of a solution that contains 1000.0 mg of AgNO3 that has been dissolved in 500 mL of water
Vaselesa [24]

0.012moldm⁻³

Explanation:

Given parameters:

Mass of AgNO₃  = 1000mg

Volume of water = 500mL

Unknown:

Molarity of solution  = ?

Solution:

The molarity of a solution is the number of moles of a solute dissolved in volume of solvent.

 Molarity = \frac{xnumber of moles}{Volume}

 

Number of moles of AgNO₃  = ?

   Number of moles = \frac{mass}{molar mass}

Molar mass of AgNO₃ = 108 + 14 + 3(16) = 170g/mol

   convert mass to g;

      1000mg = 1g

 Number of moles  = \frac{1}{170}  = 0.00588moles

   convert the given volume to dm³;

       1000mL  = 1dm³;

        500mL = 0.5dm³

Now solve;

  Molarity = \frac{0.00588}{0.5}  = 0.012moldm⁻³

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

4 0
3 years ago
Explain the change in mass that occurs when the following substances are separately heated in open crucibles
aleksandrvk [35]

Answer:

your answer is (a) Copper Metal

Explanation:

7 0
3 years ago
After Callie obtained her original results, she wanted to dig deeper. She determined that the germinating corn seed had utilized
Airida [17]

Answer:

Callie expect 600 molecules of CO2 to have been released as a waste during the same amount of time.

Explanation:

During cellular respiration 1 molecule of glucose undergoes oxidation to form 6 molecules of CO2 as a waste product.

     According to the question callie determined that the germinating corn seed had utilized 100 molecules of glucose.

    So 100 molecules of glucose will release 100×6=600 molecules of CO2 as a waste product.

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many total atoms are in C6H6
    6·1 answer
  • What would happen to the CO2 gas in a soda pop if it is left to chill in a fridge
    14·1 answer
  • A particle that orbits the nucleus in an atom is called an
    6·2 answers
  • William adds two values, following the rules for using significant figures in computations. He should write the sum of these two
    12·2 answers
  • Please I really need help:
    12·2 answers
  • Combustion of hydrocarbons such as butane (C4H10) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's a
    9·1 answer
  • What is that behavior that comes from experience or observing other animals
    7·1 answer
  • Subtract to find the temperature changes<br><br> for the water and the metal.
    13·1 answer
  • Can someone please help, ill give you a heart a five star rating an the brainliest answer!​
    6·2 answers
  • Explain why the electron configuration of 2-3-1 represents an atom in an excited state.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!