According to the following map of the biosphere reserves in south america, what part of the continent has the least amount of biosphere reserves?
a) the northwest
b) the northeast
c) the southwest
d) the west coast

The correct answer is - b) the northeast.

According to this map, the least amount of Biosphere Reserves in South America has the northeastern part of the continent. This part of South America is actually dominated by the biggest tropical rainforest in the world, the ''lungs of the Earth'', the Amazon rainforest. This is the place on the surface of our planet where there's the biggest diversity in flora and fauna, and it is also the place through which flows the river with the biggest amount of water, the Amazon River.

"do a testcross with a homozygous recessive plant."