Which one of the following is the infective stage of the Malarial Parasite? A- Trophozoite
B- Sporozoite
C- Schigozoite
D-Sporoblast

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.