Why did apartheid in south africa end during the 1990s?
a) white leaders realized that the policy was hurting the country's economy and international reputation.
b) the african national congress began calling for its dismantling and the united nations responded.
c) it never succeeded in segregating africans from whites.
d) it had accomplished all of its goals by that time.

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.