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The cardiovascular system moves nutrients and other substances throughout the body.
We call any way that animals act, either alone or with other animals, animal behavior.
The temperature of the system is the average kinetic energy of its particles. In physics, temperature is defined as the average kinetic energy of the particles in an object?
Salt-water biomes in the ocean are called marine biomes.
The embryo develops in a plant inside the female plant after fertilization.
this damage is mediated by leukocytes (a type of white blood cell). Leukocytes blood cells are white.
What helps pumice float in water?
What makes breathing difficult due to respiratory system disease?
What happens to the volume of the gas when temperature increases but amount of gas and its pressure are constant?
In cytokinesis, the cytoplasm of the cell is split in two, making two new cells. The cytoplasm is divided during cytokinesis.
What happens when development of nervous system is disturbed?
consumer Noun organism on the food chain that depends on autotrophs (producers) or other consumers for food, nutrition, and energy. Organisms that depend on other organisms for food play the role of a consumer in the food chain.
Blood first enters the heart at the right atrium, which then empties blood into the right ventricle, which pumps the blood into the lungs through the pulmonary artery to get oxygen. Blood from the body enters right atrium of the heart before it is pumped to the right ventricle and then to the lungs.
Electric current needs to flow through a closed loop in order to work. Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms a closed loop.
ESTROGEN Estrogen regulates the menstrual cycle, promotes cell division, and causes secondary female characteristics during puberty. Estrogen causes the changes of puberty.
And matter cannot be created or destroyed (not in normal chemical reactions, anyway) so all the matter originally present must still be present in one form or another. Matter cannot be created or destroyed in a chemical reaction.
When the ground absorbs the water and it settles below the surface it is called groundwater.
Where does the embryo develop in a plant?
Examples of common infections caused by viruses are the common cold, influenza and chickenpox. The common cold and flu are examples of human diseases caused by viruses.
Nonrenewable resources cannot be replaced as easily as it is consumed.
The wavelengths of light in the visible spectrum range from about 400 nanometers for deep violet to about 700 nanometers for deep red. Violet and red are two types of visible light.
Inflammatory response is the second line of defense.
All members of a species living together form a what?
Process of desalinization helps provide cleaner water for agriculture.
Flowers pollinated by what means generally lack brightly colored parts?
Primates have five digits on each extremity.
What is the term for movement toward light?
an atom that gains an electron forms a negatively charged ion, called an anion. Atoms that have gained electrons and become negatively charged are called negative ions.
Addiction affects the dopamine receptors within the brain.
Ph is a measure of the degree of the acidity or the alkalinity of a solution as measured on a scale of 0 to 14. The ph scale is used to succinctly communicate the acidity or basicity of a solution.
Water molds mostly live in water or moist soil.
A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving momentum.
A metallic bond is the force of attraction between a positive metal ion and valence electrons.
Which two processes in the water cycle are primarily responsible for the creation of a lake?
What are seamounts that rise above the water surface called?
The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and filtration.
We call the solid form of hydrocarbons coal.
An animal produces polyclonal antibodies after exposure to a microbial antigen.
The third trimester is associated with rapid fetal growth.
What type of seeds come from plants that were traditionally grown in human populations, as opposed to the seeds used for large-scale agricultural production?
Sensory neurons transmit nerve impulses from sense organs and internal organs to the brain via the?
In science, what is defined as the transfer of energy from a vibrating object in waves that travel through matter?
Plane mirrors work because the light rays create what behind the mirror?
The nitrogen cycle includes air, soil, and what?
What do we call an incorrect test result that should have been positive?
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.
An electrical signal along a nerve cell triggers the secretion of what?
In which phase do the chromosomes duplicate?
What is the most common type of brain injury?
An acorn growing into an adult tree will take the longest time to observe.
Ionic compound atoms of various elements gain or lose electrons to produce ions.
Reflex behaviors are the only innate behaviors in humans.
If two populations do not mate and produce fertile offspring, what results?
You call the movement of molecules across a membrane without the input of energy passive transport.
Copper conducts electricity the best.
Amines are classified according to the number of carbon atoms bonded directly to what atom?
Radioactive decay can give off energy and what else?
Lithium has three protons and three electrons. Lithium has three electrons.
Billions of galaxies, each of which is a gravitationally bound cluster of billions of stars, now form most of the visible mass of the universe. A galaxy is best described as a cluster of billions of stars.
What do we call the study of rock layers?
Which best describes a parallel circuit?
What are fresh water biomes defined by?
Chromosome The structures found in the nucleus of the cell, called the chromosomes, contain genetic (inherited) information. The purpose of the chromosomes in the nucleus of a cell is to store the genetic instructions needed to specify traits.
Darwin and Wallace proposed the theory of evolution by natural selection, the change in the characteristics of organisms from generation to generation, or descent with modification. Theevolution by natural selection theory explains how populations of organisms can change over time.
There are three chambers in an amphibian heart.
Meninges are three layers of connective tissue that completely envelope and protect the brain and spinal cord. The three layers of protective coverings of the spinal cord is called the meninges.
For many years many atmospheric scientists have predicted that the human-induced increase in carbon dioxide and other radiatively active trace gases would enhance the greenhouse effect and cause a global warming of the earth's surface. Human actions has increased the greenhouse effect.
What is the first stage of cellular respiration?
Positive feedback intensifies a change in the body’s physiological condition rather than reversing it.
Chromosome 4 is one of the 23 pairs of chromosomes in humans. Humans have 23 pairs pairs of chromosomes.
Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what?
On which ridge does iceland sit?
in ecology, a population is a group of organisms of the same species living in a specified area and interbreeding. You call a group of organisms of the same species that live in the same area a(n) population.
Salt-water biomes in the ocean are called what?
In addition, other research has demonstrated that vitamin K may prevent osteoporosis by halting the loss of calcium through the urine, or in working synergistically with vitamin D to reduce bone loss. A diet rich in calcium and vitamin d may reduce the risk of osteoporosis and related bone fractures.
Ocean waves travel(s) at the interface between the sea surface and the atmosphere.
Sometimes radioactivity is measured in counts per minute on a Geiger counter. The 'counting' instrument geiger counter is used to measure radioactivity.
What are the major sites of gibberellin production?
Most organelles are not found in prokaryotic cells.
All solutions contain at least two substances.
When different types of tissues work together to perform a unique function, they form organ.
Not surprisingly, controlling flight is the function of the most developed part of a bird's brain.
The energy transformations that occur when a candle burns is described by: chemical energy from the wax is converted into light and heat energy.
Kidneys, large intestine, liver, skin, and lungs comprise which system?
All mammals have four limbs.
All cells have the small size in common.
Single-celled organisms and multicellular organisms have this in common: both have a way to get rid of waste materials.
Aqueous solution is used to describe a solution in which water is the solvent.
Populations living in one place form a
The sum of the masses of the atoms in the formula is referred to as what?
Which of the following substances can be separated into several elements?
The vertebrate endoskeleton can also be called what?
Where does groundwater primarily come from?
You call the high and low points of transverse waves crests and troughs.
The sun is also the ultimate source of all of the life-giving energy on earth. Ultimately, most life forms get their energy from the sun.
Mitosis is followed by cytokinesis, when the cytoplasm divides, resulting in two cells. Cytokinesis divides the cytoplasm into two distinctive cells.
What does antifreeze do to the freezing temperature of the water in car radiators?
Iguassu falls is the largest waterfall on the planet.
Ash that enters the air naturally as a result of a volcano eruption is classified as what kind of pollutant?
Compounds like sodium chloride form structures called what?