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Licemer1 [7]
3 years ago
11

In multicellular organisms, groups of tissues form:

Biology
1 answer:
jekas [21]3 years ago
7 0

Answer:

b

Explanation:

brain pls

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4. If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of
motikmotik

Answer: The angle of refraction is 32°

Explanation:

By snell law, we have that:

n₁*sen(θ₁) = n₂*sen(θ₂)

Where n₁ = 1.5

n₂ = 2.0

θ₁ = 45°.

then we want to find the angle of refraction.

1.5*sin(45°) = 2*sin(x)

x = Asin(1.5*sin(45°)/2) = 32°

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2 years ago
The elements in the boron family of the periodic table are known as:
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Alkaline earth metals
Group 13 aka the boron family is categorized as alkaline earth metals
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1. In the table below, identify each invertebrate by matching it with its characteristics.
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Correct matching of invertebrates and its characteristics are as follows:

Sponges are animals which have many cell but no mouth, muscles , heart or brain. They are sessile and can not move from place to place like other animals do, filter feeding animals with an asymmetrical body plan.

Cnidarians are the animals with radial symmetry and stinging cnidocyte cells. These animals consists a special cell cnida which functions in preying catch and defense. example- jellyfish, anemone.

Flatworms are the worm like animal which do not consist a body cavity or coelom. example- fluke and tapeworms.

Roundworms or threadworms are segmented worms that can live in water or land. They consist a body cavity and internal organs. examples- pinworms and hookworms.

Mollusks are the animals which consist mentle, foot and and sometimes a shell. example- octopus, squids.

Echinoderms are the animals which have radial symmetry and an endoskeleton made out of calcareous plate. These animals live only in marine environment.These animals lack circulatory and excretory systems.

Arthopods are the animals with jointed legs and an exoskeleton made out of chitin. example- spiders, shrimps and crabs.



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2 years ago
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Bingel [31]
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Many cars use electricity stored in lithium ion batteries as an alternative fuel. While there are many positive benefits to this
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