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What is the white solid that forms on corroded battery terminals?
To confirm the work of another scientist, a scientist might replicate their work.
Solar and wind are still expensive compared to fossil fuels.
If a solution contains so much solute that its solubility limit is reached, the solution is said to be what?
Red blood cells are the most numerous blood cells.
In order to produce enriched uranium, the process of isotope separation removes a substantial portion of the U-235 for use in nuclear power, weapons, or other uses. Uranium is an important part of the process that is used to harness nuclear power.
As the temperature of water decreases, the water molecules slow down.
Not only must replication begin in the DNA synthesis phase of the cell cycle, but origins are replicated at different times within this phase. During the synthesis phase in the cell cycle, dna replication occurs.
An acorn growing into an adult tree will take the longest time to observe.
Heat conduction can be understood, on the atomic level, as particles physically transferring the heat energy as they come in physical contact with neighboring particles. Conduction is the transfer of thermal energy between particles of matter that are touching called.
Metal conducts heat and electricity so well because of free flowing electrons.
How many dimensions can humans see in?
Kidneys, large intestine, liver, skin, and lungs comprise which system?
Hydropower is the most widely used form of renewable energy in the world.
Half Life Half-life describes the time it takes for half the numbers of isotopes of an atom to undergo decay. The term half-life decribes the amount of time required for half of the original material to decay in an isotope.
Archimedes' law explains why a ship weighing thousands of metric tons floats on water.
Macroevolution is evolution over geologic time above the level of the species. Macroevolution happens when forces of evolution work over a long period of time.
Trichomoniasis is cause by what type of pathogen?
Some species of fish carry their fertilized eggs in their mouth until they hatch; this is called what?
Why did people stop adding lead to gasoline?
How does a cell's membrane keep extracellular materials from mixing with it's internal components?
The science of heredity (genetics) is the study of the transmission of characteristics from parent to offspring. Heredity is the science of how traits are passed from parents to offspring.
A(n) concussion is the most common type of brain injury.
The orbital is the area where an electron is most likely to be found.
Infancy is the first year of life following birth.
The chemical behavior of elements can largely be explained by electron configurations.
Impulse is the quantity of force multiplied by the time it is applied.
People can help keep a forest a good place for birds to live by
Photoautotrophs and chemoautotrophs are two basic types of what?
Formic acid is found in the secretions of?
Acids with a low pH (nearest to 1) are very acid. Acids are associated with a low number on the ph scale.
How do the spines of a cactus help it survive?
Corals build hard exoskeletons that grow to become coral reefs.
What does an underwater spider use to breathe and keep alive?
A mineral is a naturally occurring solid with a definite chemical composition and crystal structure. A mineral is described as a solid natural material with a crystal structure.
The epidermis is the outer layer of the skin, overlying the inner layer or "dermis. The skin is made of two layers: epidermis and dermis.
The number of electrons in a neutral atom equals the number of protons. Because atoms have equal numbers of positive protons and negative electrons, they possess a neutral charge.
All solutions contain at least two substances.
The combustion of propane gas produces carbon dioxide and what else?
The energy transformations that occur when a candle burns is described by: chemical energy from the wax is converted into light and heat energy.
Why are exotic species also called invasive species?
What is an isotope that is radioactive called?
Where is most of Earth锟絪 water located?
What happens when development of nervous system is disturbed?
Why are most fossils found in sedimentary rocks?
Water inflow below the surface of the ground to a lake or river is called groundwater . When the ground absorbs the water and it settles below the surface it is called groundwater.
Which state of matter has the lowest density?
It is the function of the nervous system to maintain this homeostasis. The nervous system plays a critical role in the regulation of vascular homeostasis.
Trichomoniasis is cause by a protozoa.
In what kind of a series does the genetic code work?
Each human cell contains 23 pairs of chromosomes. Humans have 23 pairs pairs of chromosomes.
What are the newest, outer layers of secondary xylem called?
The heated up water upon de-pressurization at the surface turns to steam which is then used to power steam turbines for electricity generation. This heat is used to convert water into steam, which is then used to turn a turbine, thus generating electrical power.
Ovulation (Cycle Day 13-14) Denoted by the release of an egg from the ovary, this is the time during the menstrual cycle during which conception is most likely . Ovulation takes place in the ovary and is part of the menstrual cycle.
Therefore, lipase, the enzyme which breaks down lipids, needs to have an active site to which a hydrophobic substrate binds. Lipids are broken down by lipases.
What type of transport requires no energy and occurs when substances move from areas of higher to lower concentration?
Most fossils are found in sedimentary rocks because organisms can be preserved in sedimentary rock.
The creation and destruction of oceanic crust is the reason continents move.
Index Ozone is a gaseous molecule consisting of three atoms of oxygen (O3). Three oxygen ions make up an ozone molecule.
Loss of energy is the reason that food chain typically has few levels.
In general, when only one of two alleles is expressed in the phenotype, the expressed allele is called the dominant allele. An allele that's always expressed over another is a dominant allele.
We call water that has been used for cleaning, washing, flushing, or manufacturing wastewater.
The option to remove kidney stones other than surgery is ultrasound treatments.
Light with the longest wavelengths is called what?
Individual nucleotides can be linked together through their phosphate groups to form nucleic acid polymers.
Technology is the term for the application of science to solve problems.
What type of feedback intensifies a change in the body鈥檚 physiological condition rather than reversing it?
What is part of a cycle that holds an element or water for a long period of time called?
Bacteria may divide several what an hour?
Motion can be defined simply as a change in position.
The prostate gland secretes its products directly into the urethra through several small ducts
The number of particles of a substance in a given volume is known as?
A combination reaction is a reaction in which two or more substances combine to form a single new substance.
Cells are small biological structures that make up all living things, including the human body.
Hormones generally travel through the circulatory system system of the body.
The lunar landscape is covered by craters caused by what?
All cells have the small size in common.
In humans, the heart is the first organ to form and become functional.
The cell sap is the liquid inside the central vacuole.
Two low and high tides occur per day.
Circadian rhythms are, in part, tied to the 24-hour cycle of the Earth's rotation and the amount of daylight to which you're exposed. Regular changes in biology or behavior that occur in a 24 hour cycle are part of the circadian rhythm.
Volume is a measure of the amount of space that a substance or an object occupies.
Intrinsic muscles allow your fingers to also make precise movements for actions.
Roundworms exemplify what type of organization, where two or more types of tissues work together to perform a particular function as an organ?
Lymph vessels are like blood vessels, except they move what instead of blood?
The best way humans can conserve water is to use less.
What piece of technology can you use to see infrared light?
Work is done only if a force is exerted in the direction of what?
One gram of proteins provides four calories of energy.
There are fewer than 24 hours of daylight in alaska during each day in april because earth鈥檚 rotation causes both day and night.
Because atmospheric pressure decreases rapidly with altitude near the surface, a small change in elevation will often produce a significant change in air pressure. Air pressure it decreases as altitude increases.
Concave lenses can correct myopia.
Gene expression and protein synthesis are usually considered the same molecular process.
Chemistry and physics are fields in physical.
How do the spines of a cactus help it survive?
As you increase altitude, the outside air pressure decreases as well, but at a known rate. Air pressure it decreases as altitude increases.
Many scientists think protists are the oldest eukaryotes.
Carbohydrates are the most common type of organic compound.
If two populations do not mate and produce fertile offspring, what results?
The dissolved portion of the solution is called the solute (sugar) and the dissolving portion is the solvent (water). In a glass of sweet tea the sugar is known as the solute and the water is known as the solvent.