a beach is a kind of environment & humans moving in an environment usually causes native species to lose their habitats ->  humans moving to beach usually causes native species to lose their habitats  humans moving to beach usually causes native species to lose their habitats & sea turtle is a native species to the beach ->  humans moving to beach usually causes sea turtles to lose their habitats  an animal requires a habitat for survival & a sea turtle is a kind of animal ->  a sea turtle requires a habitat for survival  humans moving to beach usually causes sea turtles to lose their habitats & a sea turtle requires a habitat for survival ->  humans moving to beach causes sea tutles to lose habitats required by the sea turtles to survive  a sea turtle is a kind of animal & if animals lose the thing they require to survive, their population will decrease ->  if sea turtles lose the thing they require to survive, their population will decrease  humans moving to beach causes sea tutles to lose habitats required by the sea turtles to survive & if sea turtles lose the thing they require to survive, their population will decrease -> humans moving to beach causes the population of sea turtles to decrease through habitats loss