Vocabulary review

Animals that feed their babies milk

• Species

• Mammals

• Diseases

• Crops

Inheritance is

• process according to

  which only the strongest

  species survive

• the study of how

  characteristics are

  passed from one

  generation to another

• a fine yellow powder

  found in flowers

• what is passed down

  from one generation to

  the next

process according to which only the strongest species survive

Something given to help progress:

• foundation

• field

• contribution

• advance

Serious illnesses are known as

What is "advance"?

• basic idea

• basis

• academic

• improvement

From birth to death:

What something is made of is its

Humankind's actions have often had a

negative effect on the

• crops

• composition

• mammal

• environment

Who is "successor"?