Answer:
color
Soil can be described based on its color (yellow brown red), how light or dark it is, and how intense the color is.
Texture
Ranges from bolder size pieces to very fine clay
Structure
Describes the shape of soil clumps and how the soil particles are held together. It can look grainy, blocky, or prism shaped.
Consistency
Hardness or softness of soil measuered by its consitstency varies with moisture for example some soils have soft, slippery consiststency when there moist.
Infiltration
How fast water enters soil
Soil moisture
Amount of water in soil pours is its moisture contents scientits detemine weight loss by drying samples in a oven at 100c the weight difference is the amount mouisture in the soil
The answer is A.
Rings surround Jupiter, Saturn, Uranus, and Neptune. These planets are all large planets.
Answer:
Antibiotic resistance evolves naturally via natural selection through random mutation, but it could also be engineered by applying an evolutionary stress on a population. ... The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce.
Explanation:
Antibiotic resistance evolves naturally via natural selection through random mutation, but it could also be engineered by applying an evolutionary stress on a population. ... The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce.
The structure of the plasma membrane;
The plasma membrane is composed of a bilayer of phospholipids. A molecule of phospholipid consists of two fatty acids and a phosphate group attached to a glycerol component. The fatty acid tails represent a hydrophobic region of the molecule, while the glycerol-phosphate head is hydrophilic. The phospholipids are arranged into a bilayer formation with the hydrophilic heads pointing to the outside and the hydrophobic tails pointing toward the inside. The plasma membrane is a barrier to most molecules. In plants, fungi, and bacteria, the membrane deposits cellulose or other polysaccharides on the outside of the membrane to create a cell wall, which it provides support to the cell.
Embedded in the phospholipid bilayer are various proteins and, in animals cells, cholesterol molecules. This mixture of molecules accounts for the fluid mosaic model of the plasma membrane, that is, a highly flexible lipid boundary impregnated with various other molecules.
The interactions of plasma membrane with the outside environment;
The plasma membrane is a selectively permeable membrane. Small molecules, like O2 and CO2, readily diffuse through the membrane. The movement of larger molecules is regulated by proteins in the plasma membrane. There are several kinds of these proteins. Channel proteins provide passage for certain dissolved substances. Transport proteins actively transport substances against a concentration gradient. The glycocalyx, consisting of the oligosaccharides from glycolipids, recognition proteins, and other glycoproteins, provides adhesion or
participates in cell-to-cell interactions. Receptor proteins recognize hormones and transmit their signals to the interior of the cell.
Various substances can be exported into the external environment by exocytosis. In exocytosis, substances are packaged in vesicles that merge with the plasma membrane. Once they merge with the membrane, their contents are released to the outside. In an opposite kind of procedure, food and other substances can be imported by
endocytosis. In endocytosis, the plasma membrane encircles the substance and encloses it in a vesicle.
Answer:
Sunspots are darker, cooler areas on the surface of the sun in a region called the photosphere.
Explanation:
The photosphere has a temperature of 5,800 degrees Kelvin. Sunspots have temperatures of about 3,800 degrees K. They look dark only in comparison with the brighter and hotter regions of the photosphere around them.
Sunspots can be very large, up to 50,000 kilometers in diameter. They are caused by interactions with the Sun's magnetic field which are not fully understood. But a sunspot is somewhat like the cap on a soda bottle: shake it up, and you can generate a big eruption. Sunspots occur over regions of intense magnetic activity, and when that energy is released, solar flares and big storms called coronal mass ejections erupt from sunspots.
