Answer:
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
Energy convention: Convection is the motion of a fluid driven by temperature differences across that fluid. When a fluid is heated, the region in closest contact with the heat source becomes less dense due to increased kinetic energy in the particles. Convection is one of the fundamental ways that heat is transferred
Soil
Soil is the upper layer of the ground comprising of a mixture of sand, silt, clay, loose rock fragments, and organic matter that can support the growth of rooted plants. The relative proportions of sand, silt and clay determine the texture and size of the pores of the soil, which affects its ability to allow air and water to penetrate/infiltrate.
The answer is the first one
Since there are no written choices, I could guess that prokaryotes are not reliable when it comes to diseases and other forms of ill-causing behavior of these microorganisms.
Scientists rely on prokaryotes to examine their structure and functions in order to come up with a good medicine. Some rely on prokaryotes to do the natural processes of decomposing and recycling matter throughout the earth's spheres.
