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Archimedes' law explains why a ship weighing thousands of metric tons floats on water.
Fungus-like protists such as slime molds reproduce with spores.
What kind of family is haumea part of?
The largest body in our solar system is the sun.
The largest body in our solar system is the sun.
What do atoms make by rearranging their chemical bonds in a reactant?
Transmembrane proteins span the entire plasma membrane.
What kind of bond consists of one sigma bond and one pi bond?
The weight of an object is the force of gravity on that object. Weight is the term for the measure of the force of gravity pulling down on an object.
Some species of fish carry their fertilized eggs in their mouth until they hatch; this is called what?
The pupil is the opening in the front of the eye.
How do most growing plant cells expand?
What type of waste is eliminated from the body through the anus?
Earthquakes mark the motions of colliding plates and the locations where plates plunge into the mantle.
There are over 7,400 species of amphibians, and they inhabit all continents except Antarctica, living in varied habitats such as rainforests, rivers and streams, deserts and alpine environments. Antarctica is the only continent without amphibians.
The term percent composition means the percentage by mass of each element in a compound.
A theory is another name for a broad explanation that is supported by a great deal of evidence.
An electormagnet is a piece of iron inside a solenoid.
Corals build hard exoskeletons that grow to become coral reefs.
If a catalyst runs out, the reaction slows.
What encloses the border of animal cells?
If two populations do not mate and produce fertile offspring, separate species result.
When installing a well, a hole is drilled into the ground to tap into an aquifer for drinking water. A well is a hole that is dug or drilled through the ground down to an aquifer called.
Wood burning is an example of a different substance being formed.
In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose . Photosynthesis converts carbon dioxide and water into glucose.
The two parathyroid glands are located behind what gland?
Venus has the most volcanoes.
Why do beer brewers add yeast to the wort?
Bacteria are the most numerous species on the planet.
Stems transport water to other parts of the plant through a system of tubes.
Pathogens spread(s) stis during sexual contact.
Filtration is the movement of fluid out of the capillaries.
What type of learning is based on past experience and reasoning?
Epithelial tissue covers external and internal surfaces of the body organs. Epithelial? tissue consists of cells that cover inner and outer body surfaces.
Diffusion is the net movement of material from an area of high concentration to an area with lower concentration. You call the movement of a substance from an area of a higher amount toward an area of lower amount diffusion.
What is part of a cycle that holds an element or water for a long period of time called?
Producing light without a high temperature is called luminescence.
The most frequently mentioned causes of adverse change include eutrophication as a result of excess nutrients from sewage and agriculture; An excess of fertilizers and other nutrients causes eutrophication to occur.
Which of the following best describes a mineral?
Mercury's ability to expand and contract with even slight changes of temperature and pressure have made it the liquid of choice for use in thermometers, barometers, hydrometers, and other pieces of equipment. The liquid in a thermometer expands or contracts to respond to heat or cold.
What is responsible for the properties of metals?
Which of the following best describes a role of mushrooms in ecosystems?
a) Primary active transport directly uses the hydrolysis of ATP to generate the energy to move a molecule or ion against its concentration gradient. Primary active transport involves the forcing of a substance into a cell against its concentration gradient.
For social animals, communication essential.
Most skin structures originate in the dermis.
Meter much distance can beta particles travel through air.
Thermodynamics studies the effects of changes in temperature, pressure, and volume on physical systems on the macroscopic scale, and the transfer of energy as heat. The study of energy and energy transfer involving physical matter is called thermodynamics.
Which of the following is an example of the formation of a mixture?
What happens when forces of evolution work over a long period of time?
Kinetic Energy- the energy of motion. Kinetic engergy is the energy of anything in motion.
In a pedigree what shape symbolizes males?
As altitude rises, what happens to the temperature in the thermosphere?
What contains most of the structures found in skin?
The “knee-jerk" motion that people involuntarily perform after being struck in the knee in a certain way is an example of what kind of behavior?
How many limbs to birds have?
The sun and the moon appear to be about the same size in the sky because the moon is smaller in diameter and is closer to earth than the sun.
The prostate gland secretes its products directly into the urethra through several small ducts
A convergent plate boundary is created when two plates do what?
Air is made of atoms.
If the acceleration acting on a body is that due to gravity, the force acting on it is the force of gravity which we call weight . Weight is the force of gravity.
Unlike energy, matter doesn’t need to be constantly added to ecosystems because it is recycled through ecosystems.
Some animals (amphibians and reptiles) have a three-chambered heart, in which the blood from each atrium is mixed in the single ventricle before being pumped to the aorta. There are three chambers in an amphibian heart.
Why do beer brewers add yeast to the wort?
Which tool would best help a person observe the parts of a plant cell?
Muscular dystrophy is a a wasting disease.
Geothermal energy energy is clean and does not release greenhouse gases.
If two populations do not mate and produce fertile offspring, what results?
Animals can transport what waste material in the circulatory system and store it safely at high concentrations?
The volcanic arc typically forms where the subducting plate is about 100 km below the overriding plate. A volcanic arc is formed when a subducting plate flows under another tectonic plate.
The largest known proteins are titins.
In the human body, the intersection where the paths for air and food cross is called pharynx.
What small biological structures make up all living things, including the human body?
Objects on earth have two forces acting on them at all times.
Which is the best explanation for how air masses move across the United States?
Most eukaryotes are diploid , that is they have two copies of each chromosome, thus every human cell actually has 46 chromosomes in every cell. There are 46 chromosomes chromosomes in a diploid human cell.
Human facial expressions can communicate emotions.
Individual is the term for an organism, or single living thing.
What kind of a resource is soil, for human purposes?
Addiction affects the dopamine receptors within the brain.
A galaxy is best described as a cluster of billions of stars.
Density describes how much matter is in a certain amount of space.
Is the heat of reaction positive or negative for an endothermic reaction?
We call the solid form of hydrocarbons coal.
Medial rotation is the term for rotation of a bone toward the midline of the body.
Hagfishes have a skull made of what?
There are three quarks in each proton and neutron. There are three quarks in each proton and neutron.
A(n) increase in length happens to metal railroad tracks during the heat of a summer day.
What is the ratio of solutes in a solution to a volume of solvent in a solution known as?
What are the largest known proteins called?
When gas particles heat up, pressure increase.
Weight Force on an object due to gravity. Weight is the force of gravity.
An organism that carries pathogens from one individual to another is called a vector.
Liquids do have a fixed volume or amount of space they take up. The term volume means the amount of space matter takes up.
Which is the best explanation for how air masses move across the United States?
Clouds form when warm air rises and the water vapor it contains condenses onto particles called cloud condensation nuclei. Condensation must occur for clouds to form.
Flowers pollinated by wind generally lack brightly colored parts.
An asteroid six to 10 miles across collided with the Earth about 65 million years ago and is thought to have caused the extinction of the dinosaurs, along with 75 percent of all other species. In the past, asteroids colliding with planet earth has caused many organisms to die off.
There are about TWO High tides and TWO low tides a DAY. Two low and high tides occur per day.
Humans are unique in their ability to alter their environment with the conscious purpose of increasing what, which acts as a limiting factor on populations in general?
Which action forms a different chemical substance?