An alligator lives in a swamp with deer, birds, fish, trees, and different types of plants. The alligator eats a bird that eats the seeds and plants. What is the original source of the energy that the alligator receives from eating the bird? * A the energy that the bird creates
B the heat from the air in the swamp
C the flowing water in the swamp
D the sunlight that the plants absorb

D

The body is protected against harmful flu viruses by

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.