The linker BUTin “But carbon dioxide and other gases in the atmosphere trap the sun's heat” could be replaced, without change of meaning, by:
Consider the sentences below:
1. Global warming ___________ by the greenhouse effect.
2. When ice in the poles melt, sea levels ____________.
3. Carbon dioxide __________ the sun's heat.
4. An American scientist ___________ holes in the ozone layer.
Choose the alternative which presents the correct verb forms that complete the above sentences, respectively:
This aid is becoming increasingly popular in schools and institutions that can afford it. It permits the projection and manipulation of digitalized teaching content, both original and published. This aid is known as:

The correct for to write the number 29 in its ordinal form is:

Ao passarmos a frase abaixo para o inglês, obteremos: “Hoje foi um dos piores dias da minha vida.”
Atenção: Para responder às questões de números 21 a 25, considere o texto abaixo.

The correct preposition that fills gap [A], in the 1st paragraph, is
Atenção: Para responder às questões de números 21 a 25, considere o texto abaixo.

A synonym for On the other hand, as it is used in the 1st paragraph, is
Atenção: Para responder às questões de números 21 a 25, considere o texto abaixo.


In the text, the word in bold-face type is similar to the one in italics in
Translate into English: A Lake Pontchartrain Causeway é a ponte mais larga do mundo.