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sammy [17]
3 years ago
14

Which of these are characteristics of all arthropods? (Select all that apply.)

Chemistry
1 answer:
Brut [27]3 years ago
8 0
Not 6 legs, the have everything else
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DEFINE THESE WORDS FOR A TON OF POINTS!!!!!!!
PilotLPTM [1.2K]
Hi , these are the definitions
Chemistry; the science that deals with the composition and properties of substances and various elementary forms of matter.
aquatic system ; ecosystem in a body of water , communities and organisms that are dependent on each other.
depth ; the distance from the top to the bottom of something .
geography ; the study of the earth s  physical features and the people ,plants , and animals.
light ; brightness from the sun or from a light.
medium ; between small and  large in   size.
period ;  the name given to a horizontal row of the periodic table.
properties ; attributes of a substance.
refraction ; the change of direction of a ray of light , sound , heat ....
reflection ; reflection is when infrared waves  bounce  from a surface .
salinity ; a saline substance or a liquid that contains salt.
pressure ; measure of the force applied over an  unit area .
photosynthesis ; the process used by plants , algae ,  and certain bacteria to harness energy from sunlight into chemical energy.
thermocline ; an abrupt  temperature gradient in a body of water .
intertidal ; relating to the region    between the hide tide mark and the low  tide mark .
benthic ; relating to the bottom of a sea or a lake or to the organisms that live there .
pelagic ; relating to or living in the sea far from the shore.
epipelagic ; relating to or inhabiting the uppermost layer of the water column of the open ocean  , into which enough sunlight enters for photosynthesis to take place.
mesopelagic ; relating to or inhabiting the layer of the water column in the open sea that lies between the epipelagic   and bathypelagic  layers at depths of about 200 to 1,000 meters.
bathypelagic ; relating to or inhabiting the layer of the water column  of the open sea that lies between the mesopelagic  and abyssopelagic  layers at depths of about 1,000 to 4,000.
abyssopelagic ; refering to or occurring in the region of deep water above the floor of the ocean .
neritic ; region of water lying  directly above the sub littoral zone of the sea bottom .
photic ;   pertaining to the generation of light by organisms .
aphotic; zone of an ocean , lowest level  at which photosynthesis can take place .
commensalism ; type of a relationship between a plant , an animal , fungus , etc.
competition ; the struggle among  organisms .
freshwater systems ; subset of earth s aquatic ecosystems .
marine systems ; inside aquatic system , marine systems include oceans , seas ,etc.
mutual ism ; relation between species of organisms  in which both benefit from the association.
organism ; a system with many parts that depends on each other and work together. 
parasitism ; the behavior of  a parasite .
predation; preying or plundering.
relationships ; the way in which two things are connected .
terrestrial systems ; an ecosystem only found on land forms.


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4 0
4 years ago
________ are neutral particles found in the nucleus of an atom.
IRISSAK [1]
Neutrons is your answer my friend
3 0
3 years ago
Read 2 more answers
Some Reactions are endothermic
Alinara [238K]

Answer:

endothermic means energy is taken in and temperature increases.

8 0
4 years ago
If 1.00 g of a hydrocarbon is combusted and found to produce 3.14 g of co2, what is the empirical formula of the hydrocarbon?
photoshop1234 [79]
The combustion reaction is as expressed,

                CxHy + O2 --> CO2 + H2O

The mass fraction of carbon in CO2 is 3/11. Hence,
       mass of C in CO2 = (3.14 g)(3/11) = 0.86 g C.

Given that we have 1 g of the hydrocarbon, the mass of H is equal to 0.14 g. 

     moles of C = 0.86 g C / 12 g = 0.0713
     moles of H = 0.14 g H / 1 g  = 0.14

The empirical formula for the hydrocarbon is therefore, CH₂.
7 0
3 years ago
The nucleus of 8Be, which consists of four protons and four neutrons, is very unstable and spontaneously breaks into two alpha p
Mariana [72]

Answer: The given statement is false.

Explanation:

When there is more difference in the ratio or number of protons and neutrons then nucleus of the atom becomes unstable in nature. This unstability is caused due to greater repulsion between the like charges of sub-atomic particles.

As a result, this force of repulsion becomes greater than the binding energy. And, this force is known as the weak force because it is unable to bind the neutrons and protons together.

The proton and neutron ratio for smaller elements is 1:1 and for higher elements it has to be 1:5. Since, ^{8}Be is a smaller element with 4 protons and 4 neutrons. Hence, the proton and neutron ratio is 1:1.

Therefore, ^{8}Be is stable in nature.

Thus, we can conclude that the statement nucleus of 8Be, which consists of four protons and four neutrons, is very unstable and spontaneously breaks into two alpha particles (helium nuclei, each consisting of two protons and two neutrons), is false.

5 0
3 years ago
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