El sintagma verbal predicado

El sintagma verbal predicado El texto

El ensayo, la exposición y la argumentación

La lírica y la prosa en el Barroco

La literatura española en el siglo XIX

Final Autoevaluation 1.02 - Plant nutrition

J. van Helmont's experiment Van Helmont (1577-1644), a Flemish doctor and chemist, thought that in addition to water, air and substances in soil, other elements must be necessary for plant…

Think about it. The responses of plants

Remember what you have studied in this section and answer the questions: Discuss whether a plant would respond to light if the tips of the stem were cut off. Explain why poinsettias are typical…

Work it out. The natural environment

Remember what you have studied in this section and answer the questions: What environmental conditions prevent the existence of life on the other planets in the Solar System? Why is light a limiting…

Ways to save energy

Look at the pictures and answer the questions. Which of these measures do you apply? Which do you think are the most useful?

True/False. Temperature

Answer true or false: Temperature scales are graduated based on reference points which never change On the Celsius scale 180 degrees represents freezing and evaporating water. You can have different…

Interpret. Coal and steel production

How did the production of coal and steel grow? Interpret the graphs. → from...to..., rose steadily/gradually/sharply...,