42,648 免费图片适用于学生

生物学鱼水下野生动物动物海上生活水阿拉斯加州西維吉尼亞州旅行

Microscope virus

实验室科学

Bluegill searches for food

Brook Trout juvenile-2

野生动物鱼

Yellow and Black Triplefin - Forsterygion flavonigrum

Human Ear

医疗药物健康

Male Student with Smartphone

Little Girl is Studying

Home Education

孩子们学校

Home Education

孩子们学校

MERS Coronavirus Particles–Colorized scanning electron micrograph of Middle East Respiratory Syndrome virus particles attached to the surface of an infected VERO E6 cell. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

school boy

孩子们学校

医疗药物药品

Woman Taking a Bath

Microscope - Grayscale

实验室科学

School boy

孩子们学校

Partridge

Owl

Student Girl

Sea Otter

Pills bottle

医疗药物药品

Crying Schoolboy

Lab technician adding a solution to an Enzyme–Linked Immunosorbent Assay (ELISA) plate Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Native american liaison and biologists with sedated black bear

野生动物科学

Medical doctor nurse patient

Female student heart

滑板运动心脏膈面

Juvenile Chinook salmon-2

Preparing to tag black bear cub-3

哺乳动物生物学家

Biologists search for Fountain Darter-2

Juvenile Chinook salmon-2

Hybognathus placitus

Biologists search for Fountain Darter-1

Novel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2 (round magenta objects) emerging from the surface of cells cultured in the lab. SARS-CoV-2, also known as 2019-nCoV, is the virus that causes COVID-19. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Beaver

Female Student Umbrella

Novel Coronavirus SARS-CoV-2–Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Biologists search for Fountain Darter-1

Brook trout-1

A medical illustration of Clostridioides difficile bacteria, formerly known as Clostridium difficile. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

A 100X photomicrograph magnification of a malachite green spore stained sample, revealed the presence of numerous Bacillus sp. bacteria. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

生物学细菌

Students outside of state college, Pennsylvania in 1922

A medical illustration of drug–resistant, Streptococcus pneumoniae bacteria. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

A 100X photomicrograph magnification of photomicrograph of a hematoxylin and eosin (H&E) stained liver tissue specimen, revealed the presence of histopathologic changes indicative of fatty degeneration. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

A student having sandwich for lunch. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

We are proud to support Hope for Children on their mission to ensure children in the most extreme poverty are as happy and content as any other child, enjoying a childhood that sets them up for a fulfilling future - because every child deserves that.

As well as donating 10% of our revenue to Hope for Children we have created this special collection FREE for everyone to enjoy.

If you can, please visit Hope for Children to give back by donating or to learn about other ways you can support their mission.

Bronze Corydoras - Corydoras aeneus

Juvenile bull trout -- Salvelinus confluentus

Candy darter-1

Dolly Varden-1

Juvenile Rainbow trout-1

Candy darter

Dolly Varden-1

Juvenile Rainbow trout-2

Brownish Fish 2

Yellow perch-1

Ash Meadows Amargosa pupfish-1

Juvenile Rainbow trout-1

Candy darter-1

Lake trout-1

Juvenile Chinook salmon-2

Short-nose Sturgeon

Giraffe

野生动物动物

Schoolboy Pedestrian is Crossing a Road

Bright Flower Free Photo

Young woman withdrawing money from credit card at ATM

Mountain greenery hills

school boy

孩子们学校

Juvenile Chinook salmon-3

Rosyside dace

Dolly Varden-1

Juvenile Dolly Varden-4

Smallmouth bass-8

Candy darter-1

Juvenile Rainbow trout-2

Smallmouth bass-4

野生动物鱼

Plain pocketbook mussel and lure

Brook trout-1

Okaloosa darter-5

Dolly Varden-1

Dolly Varden-1

Chinook salmon migrating-2

Ash Meadows Amargosa pupfish-3

Dolly Varden-1

Juvenile redbreast sunfish

Candy darter-1

Smallmouth bass-1

Juvenile Chinook salmon-1

Graduation Cap

Dinosaur skull

Amoeba Cell

Blue tang fish

Juvenile Rainbow trout-1

Juvenile Rainbow trout-3

aquarium

Measuring black bear paw

野生动物哺乳动物

Juvenile Chinook salmon-1

Arctic grayling-2

Dolly Varden-2

Sub-Adult Pallid sturgeons

Dolly Varden-1

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