Answer:
to match the mystery food sample to a definite
positive result (gelatin, oil, etc.)
to match the mystery food sample to a definite
negative result (water)
Pathogen
antigen
antibodies
foreign
histocompatability
presenting
leukocyte
Answer:
All of the systems on Earth are classified as open systems. However, the Earth system as a whole is considered a closed system because there is a limit to how much matter is exchanged. Our Earth system has four spheres: the atmosphere, the biosphere, the hydrosphere, and the geosphere.
Explanation: The term “Earth system" refers to Earth´s interacting physical, chemical, and biological processes. The system consists of the land, oceans, atmosphere and poles. It includes the planet's natural cycles — the carbon, water, nitrogen, phosphorus, sulphur and other cycles — and deep Earth processes.
A system is a group of independent parts that work together as a whole. The Earth has four major systems or spheres. These systems are the geosphere, the hydrosphere, the atmosphere, and the biosphere.
Answer: chlorophyll is the coloring of the plants
the plants during the winter when photosynthesis gets harder chlorophyll gives neutrients
chlorophyll
Explanation:
Answer:
D. Warm front
Explanation:
Warm fronts typically have warmer and more moist air than the air in front of it. Replacing the cold air with warm air can cause precipitation.