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Natural selection and adaptation | High school biology | Khan Academy

7,149 views

Khan Academy

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

98%
  • 8:43 / 8:51

Speech Rate:

  • 141 wpm - Conversational

Category:

  • Education

Tags :

Intro:

Video Vocabulary

cryptic

/ˈkriptik/

adjective

having meaning that is mysterious or obscure.

happens

/ˈhapən/

verb

take place.

organisms

/ˈôrɡəˌnizəm/

noun other

individual animal, plant, or single-celled life form. System with many parts that function as a whole.

through

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. moving in one side and out of other side of.

particular

/pə(r)ˈtikyələr/

adjective noun

singling out individual member of group. individual item.

accumulate

/əˈkyo͞om(y)əˌlāt/

verb

To gather or acquire so that you have more of it.

increased
verb

become or make greater in size or degree.

sunlight

/ˈsənˌlīt/

noun

Rays of light coming from the sun.

survive

/sərˈvīv/

verb

To continue to live despite illness or trouble.

adaptation

/ˌadapˈtāSH(ə)n/

noun

Changing to a new form; thing that is changed.

melanin

/ˈmelənən/

noun

Pigment giving color to skin, hair etc..

friendly

/ˈfren(d)lē/

adjective adverb noun

kind and pleasant. in friendly manner. Game played not in a competition.

process

/ˈpräˌses/

noun verb

Set of changes that occur slowly and naturally. perform mechanical or chemical operations on.

damaging

/ˈdamijiNG/

adjective verb

causing physical damage. To harm physically; to hurt or break something.

protect

/prəˈtekt/

verb

keep safe from harm or injury.

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