# data[].attributes.headline
Most Give Birth to Live Offspring and Feed Young with Milk Through Mammary Glands

# data[].attributes.subject
Most Give Birth to Live Offspring and Feed Young with Milk Through Mammary Glands

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Jimcoda

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EKU

# data[].attributes.body
Media Lib

# data[].attributes.body
Genius

# data[].attributes.headline
Remain in Water Throughout Their Life Cycle

# data[].attributes.subject
Remain in Water Throughout Their Life Cycle

# data[].attributes.body
Scuba

# data[].attributes.headline
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.subject
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.body
CBS

# data[].attributes.headline
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.subject
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.body
Daily Mail

# data[].attributes.headline
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.subject
Sperm Passes Into the Female for Internal Fertilization

# data[].attributes.body
NBC

# data[].attributes.headline
Eggs and Sperm Released for External Fertilization

# data[].attributes.subject
Eggs and Sperm Released for External Fertilization

# data[].attributes.body
Kids Discover

# data[].attributes.headline
Eggs and Sperm Released for External Fertilization

# data[].attributes.subject
Eggs and Sperm Released for External Fertilization

# data[].attributes.body
Seymour Salmon

# data[].attributes.body
(two wings and two arms/ wings)

Earthtimes

# data[].attributes.body
Cloudinary

# data[].attributes.body
(in most species)

Petsway

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St. Louis Zoo

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Biology Corner

# data[].attributes.body
With pentadactyl limbs

Earth Life

# data[].attributes.body
With pentadactyl limbs

Environmental Adaptations

# data[].attributes.body
With pentadactyl limbs

Black Well Publishing

# data[].attributes.body
With pentadactyl limbs.

# data[].attributes.body
Ventilated using ribs and diaphragm.

New World Encyclopedia

# data[].attributes.body
Ventilated using air sacs.

Birds of Eden

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Increases surface area.

Consider the Gospel

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Small folds and moist skin for gas exchange.

Tutorvista

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Arkansas Game and Fish Commission

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Gills covered by an operculum

Earth Life

# data[].attributes.body
Hair made of keratin.

San Diego Zoo

# data[].attributes.body
Made of keratin.

FunMozar

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Covered in scale of keratin.

Wikimedia

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Permeable to water and gasses.

Pinimg

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ZME Science

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By Tevyn Pak