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The energy transformations that occur when a candle burns is described by: chemical energy from the wax is converted into light and heat energy.
Neutrons are neutral particles in the nucleus of the atom. The atom in a neutron is found in the the nucleus.
What monitors the level of carbon dioxide in the blood?
Most digestion is completed in the duodenum.
If two populations do not mate and produce fertile offspring, what results?
Blood's four main ingredients are plasma, red cells, white cells, and platelets. Blood is made up of red blood cells, white blood cells, platelets, and plasma.
According to the competitive exclusion principle, it is impossible for two species to occupy the same niche for an extended period of time. Competive exclusion princple explains why two different species cannot occupy the same niche in the same place for very long.
Most fish reproduce with one another sexually.
In which type of cells are most organelles not found?
Splitting of the plasma membrane and the cytoplasm into two is called cytokinesis. The cytoplasm is divided during cytokinesis.
In combination reactions, two or more compounds react to form one product. A combination reaction is a reaction in which two or more substances combine to form a single new substance.
You can find sodium acetate in a heat pack.
Trans fats have been shown to increase the risk of coronary heart disease even moreso than saturated fats. Trans fats have been implicated in the presence of heart disease.
What shape is the lens of the eye?
What happens to metal railroad tracks during the heat of a summer day?
Lymphocytes are also produced in the bone marrow. Bone marrow is found inside many bones and produces lymphocytes.
Roundworms exemplify organ-level organization, where two or more types of tissues work together to perform a particular function as an organ.
Scientists use the Kelvin temperature scale. The kelvin scale temperature scale is commonly used in science.
The earth's magnetic poles have switched places repeatedly in the past.
Ovulation occurs before the endometrium thickens in estrous cycles.
The sun mostly made up of the element hydrogen.
When do cells acquire different identities in an ordered spatial arrangement?
Everybody knows poly means many and ticks are bloodsucking parasites. Bloodsucking parasites are nearly all ticks that live on the body surfaces of reptiles or mammals.
The pharynx is the name of the tube that joins the mouth to the digestive and respiratory tracts.
Air can be separated into several elements.
The product of a wave's wavelength and its frequency is its speed.
Meter much distance can beta particles travel through air.
Where does the small intestine begin?
Like mitochondria, plastids contain their own dna.
What are the largest known proteins?
Humans can see in three dimensions.
Lipids play several important roles in the human body.
Human lysozyme is an antibacterial protein found in tears and saliva.
Sedimentation The process of suspended solid particles settling out (going to the bottom of the vessel) in water. Sedimentation is the term for when clumped solids sink to the bottom of the water.
Scientists explain the world based on what?
The tilt of earth on its axis causes summer to be warmer than winter in the northern hemisphere because the rays of the sun strike the northern hemisphere more directly in the summer.
The frequency of a wave is the reciprocal of what other attribute of the wave?
How many types of galaxies are there?
Unlike energy, matter doesn’t need to be constantly added to ecosystems because it is recycled through ecosystems.
Water plus other substances makes what?
Which is an example of water condensing?
The independent variable is that which is controlled or manipulated by the experimenter. The values of independent variables are controlled by the experimenter over the course of an experiment.
Gross Alpha/Beta Particle Activity: The total radioactivity due to alpha or beta particle emissions as inferred from measurements on a dry sample. Alpha emission is a type of radioactivity.
Which is an example of a different substance being formed?
Since the electric field lines point radially away from the charge, they are perpendicular to what?
Applying a pressure greater than the osmotic pressure of a solution will do what?
Air pollution causes acid rain, ozone depletion, and global warming.
What is thought to be the oldest eukaryotes?
What do plasmodesmata connect to in the plant cell?
Leukocytes are white blood cells. Leukocytes blood cells are white.
The water in some springs are hot because they're heated by hot magma.
Which of the following structures is not present in animal cells?
Which of the following is an example of a form of energy?
Oxygen is the name of the second most electronegative element.
The structure of mitochondrion plays an important role in aerobic respiration.
Sliding friction is friction that acts on objects when they are sliding over a surface.
And on one of these planets, the Earth, the first living cell arose around four billion years ago. The first living cells may have evolved around 4 billion years ago.
Pheromones are released into the environment for communication between animals of the same species.
Limiting the number of cars on the roads would most likely improve the air quality in large texas cities.
What is defined as the velocity of the object at a given moment?
In metaphase ii stage, chromosomes line up one on top of each other along the middle of the cell, similar to how they line up in mitosis.
When volume does not change, temperature is proportional to pressure.
Heat, light, and sound are all different forms of energy.
What type of matter transmits light without scattering it?
Of the three types of skeleton designs - hydrostatic skeletons, exoskeletons, and endoskeletons - which do humans possess?
A double bond consists of one sigma bond and one pi bond.
Brain and eyes are the organs work together to allow us to see.
Lead is a soft, malleable, and corrosion resistant material called.
How many types of simple machines are there?
Streams often start in mountains.
Nitrogen, phosphorous, potassium, calcium, magnesium and sulfur are called macronutrients, and are the basic nutrients required by plants in relatively large amounts. Potassium, calcium, and magnesium are considered macronutrients.
Waves like this are called mechanical because the energy is transmitted through a material medium, without a mass movement of the medium itself . Mechanical waves require a material medium such as water, air, or rope.
What proteins span the entire plasma membrane?
A population is all the members of one species that live in the same area. You call a group of organisms of the same species that live in the same area a(n) population.
Rna and dna are types of nucleic acids containing the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus.
The stem holds the plant upright and food and water travel up and down the stem. The stem is the basic structure that holds plants upright, allowing plants to get the sunlight and air they need.
What is it called when a new species arises without geographic separation?
Passive transport occurs when substances cross the plasma membrane without any input of energy from the cell.
Amphibians to Paint Online Amphibians are vertebrates that spend part of their lives under water (breathing with gills) and the remainder on land (breathing with lungs). Frogs are amphibians that live part of the time in fresh water and live rest of the time on land.
A squirrel storing nuts is preparing for a seasonal change in the environment.
The word 'Alkali' comes from the Arabic 'qali' meaning 'from the ashes' since ashes mixed with water used as cleaning products (such as soaps) are made of alkali materials The word alkali comes from the arabic al-qili, meaning “ashes of the saltwort plant from salt marshes”.
The sum of the masses of the atoms in the formula is referred to as what?
Reptiles are ectothermic or heterothermic vertebrates (commonly referred to as cold-blooded), meaning they do not have an automatic internal body temperature control system. Ectothermic vertebrates control body temperature to just a limited extent from the outside by changing behavior.
A watershed is a dynamic system that includes the area of land delineated by the drainage basin, its aquatic components (streams and rivers, agricultural drains, lakes and ponds, riparian zones, and wetlands), and its plant and animal life. All of the land drained by a river system is called its basin, or the "wet" term watershed
Light is scattered by molecules and aerosols present in the atmosphere and collected by a large telescope. Light is scattered from molecules in our atmosphere.
Wood burning is an example of a different substance being formed.
The most basic division of land plants is between nonvascular and vascular plants.
Mercury (Hydrargyrum) is the only metal which is liquid at room temperature. Mercury is not a solid even at room temperature.
Climate is the long-term weather pattern of an area, including temperature, precipitation, and wind. Climate is the long-term average of weather in a particular spot.
The decayed remains of living organisms is called humus.
What sac, which was sitting on top of the flat embryo, envelops the embryo as it folds?
The sun keeps every planet in orbit by its gravity...... Planets are held by the force of gravity in elliptical orbits around sun.
Many enzymes are simple proteins consisting entirely of one or more of these?
The sum of the masses of the atoms in the formula is referred to as what?
What results when the water vapor from a hot shower contacts the cooler surface of a mirror?
One way that the moon is different from earth is that the moon has almost no atmosphere.
What does the male reproductive system consist of?
Enzymes in saliva help bread down and digest what?
Which of the following best describes a mineral?
What is muscle tissue that is attached to the bone called?