Problem: A variety of industries benefit from hunting and support hunting on economic grounds. In Tanzania, it is estimated that a safari hunter spends fifty to one hundred times that of the average ecotourist. While the average photo tourist may seek luxury accommodation, the average safari hunter generally stays in tented camps. Safari hunters are also more likely to use remote areas, uninviting to the typical ecotourist. Advocates argue that these hunters allow for anti-poaching activities and revenue for local communities.[citation needed]
Where can safari hunters go which are uninviting to the less hardcore ecotourist?
The answer is the following: remote areas

Problem: Nearly all polychaetes have parapodia that function as limbs, while other major annelid groups lack them. Parapodia are unjointed paired extensions of the body wall, and their muscles are derived from the circular muscles of the body. They are often supported internally by one or more large, thick chetae. The parapodia of burrowing and tube-dwelling polychaetes are often just ridges whose tips bear hooked chetae. In active crawlers and swimmers the parapodia are often divided into large upper and lower paddles on a very short trunk, and the paddles are generally fringed with chetae and sometimes with cirri (fused bundles of cilia) and gills.
What kind of parapodia do burrowing annelids often have?
The answer is the following: ridges whose tips bear hooked chetae

Problem: In general relativity, a vanishing stress-energy tensor implies, through Einstein field equations, the vanishing of all the components of the Ricci tensor. Vacuum does not mean that the curvature of space-time is necessarily flat: the gravitational field can still produce curvature in a vacuum in the form of tidal forces and gravitational waves (technically, these phenomena are the components of the Weyl tensor). The black hole (with zero electric charge) is an elegant example of a region completely "filled" with vacuum, but still showing a strong curvature.
Who's equations  helped to imply vanishing of the Ricci tensor?
The answer is the following: Einstein

Problem: Another recent environmental issue in Melbourne was the Victorian government project of channel deepening Melbourne Ports by dredging Port Phillip Bay—the Port Phillip Channel Deepening Project. It was subject to controversy and strict regulations among fears that beaches and marine wildlife could be affected by the disturbance of heavy metals and other industrial sediments. Other major pollution problems in Melbourne include levels of bacteria including E. coli in the Yarra River and its tributaries caused by septic systems, as well as litter. Up to 350,000 cigarette butts enter the storm water runoff every day. Several programs are being implemented to minimise beach and river pollution. In February 2010, The Transition Decade, an initiative to transition human society, economics and environment towards sustainability, was launched in Melbourne.
Why was the Port Phillip Channel Deppening Project subject to controversy and strict regulations?
The answer is the following:
fears that beaches and marine wildlife could be affected