Adult fleas cannot survive or lay eggs without a blood meal, but may hibernate from two months to one year without feeding. There is often a desperate need for flea control after a family has returned from a long vacation. The house has been empty with no cat or dog around for fleas to feed on.
A landform is a natural feature of the Earth's surface. Landforms together make up a given terrain, and their arrangement on the landscape or the study of same is known as topography.ypical landforms include hills, mountains, plateaus, canyons, valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins.
Landforms are the natural shapes, or features on Earth. Landforms are shaped by earthquakes, volcanic activity, and the movement of tectonic plates.