El signo

La lengua en la sociedad

End-of-unit activities - Animal reproduction

Reproduction is the only vital function that is not needed to keep an individual alive. It ensures the continuation of the species. Although sexual reproduction is a universal characteristic of animals,…

Match. The basic function of living things

Indicate which basic function of living things is reflected in each of these cases: A wolf sniffs the trail of a boar. A cheetah eats a gazelle. A rabbit hears a noise and hides in the grass. Two big…

Classify. The sense organs

Classify the organs described below using the two criteria given:

Complete. Trophic relationships in ecosystems

Complete the table.

Write. Names and formulas (1)

Write the formula for each of these compounds: Nitrogen tribromide Sulphur dioxide Carbon tetrafluoride Lithium bromide

Final Autoevaluation T12 04 - Waves. Light and sound

Answer these questions: How far does light travel through water in 10s? d = km How far does sound travel through air in 30s? d = km

Identify. The stages of the French Revolution

Match each stage of the French Revolution with the corresponding events:

Initial evaluation T3 03 - The industrialisation of European societies

Complete this table with the characteristics of the two social classes of the capitalist system.