Brazil encourages to increase environmental awareness in the rain forest.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?