Yes, there are three South American countries that lie on the equator: Colombia, Ecuador, and Brazil.
The equator does not cross Argentina.
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There are six African countries that lie on the equatorial line. They are Gabon, Congo, DR Congo, Uganda, Kenya, and Somalia.
There are nine out of the 13 South American Countries that are situated on or below the equator. These following countries all lie entirely below the equator Argentina, Bolivia, Chile, Paraguay, Peru, Uruguay whereas Brazil, Ecuador, lie mostly below and Columbia lies partly below.
Countries on or close to the equator have higher temperatures because they are nearer to the sun. Ireland is 53°North, so a long way from the equator and as a result it gets lower temperatures.
Ecuador, Colombia, and Brazil
In countries that lie in or around the equator where there are to 2 seasons unlike other places
Australia and Antarctica lie entirely south of the equator.
Continents that lie completely south of the equator are Australia and Antarctica. Asia and Africa lie partially underneath the equator.
Brazil, gabon,kenya
Brazil and Indonesia are the two countries that lie in both the northern hemisphere and the southern hemisphere. Brazil crosses the equator and is located in both hemispheres, while Indonesia is made up of islands that straddle the equator.