What form of matter is made from only one type of atom? element What kinds of particles are made of just one kind of atom? A chemical element is a substance that contains only one type of atom, which is the smallest particle of an element. Atoms are made up of protons, neutrons, and electrons. […]

What is a complex environmental system? A complex system is a system composed of many components which may interact with each other. Systems that are “complex” have distinct properties that arise from these relationships, such as nonlinearity, emergence, spontaneous order, adaptation, and feedback loops, among others. What is the environment system? In the previous section […]

Why are tides different in different places? Tides happen because of the gravitational pull of the Moon and Sun on ocean water. Because Earth is rotating, the tides change over time. Some places have a larger tidal range than others because of differences in the shape of the ocean floor. How are tidal currents different […]

What has a fixed volume and takes the shape of its container? liquid What state of matter takes the shape and volume of its container? What type of substance can be poured and takes the shape of its container? Sand What is the shape that a liquid takes at the top of a container? Liquids […]

What happens to the sugar when you keep on adding to the water did the sugar dissolve? When you add sugar to water, the sugar crystals dissolve and the sugar goes into solution. But you can’t dissolve an infinite amount of sugar into a fixed volume of water. When as much sugar has been dissolved […]

Is one of two or more forms of a gene that is inherited from each parent? An allele is a variant form of a gene. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent. Each pair of alleles represents the genotype of a […]

Is an Autotroph a primary consumer? Primary producers (organisms that make their own food from sunlight and/or chemical energy from deep sea vents) are the base of every food chain – these organisms are called autotrophs. Primary consumers are animals that eat primary producers; they are also called herbivores (plant-eaters). Is a consumer a Heterotroph […]

Which science is not considered a natural science? biology astronomy physics computer science. What are the 4 natural sciences? The natural sciences seek to understand how the world and universe around us works. There are five major branches (top left to bottom right): Chemistry, astronomy, Earth science, physics, and biology. Which of the following is […]

Which of the following are signs that a boy is going through puberty? For a Boy. The physical changes of puberty for a boy usually start with enlargement of the testicles and sprouting of pubic hair, followed by a growth spurt between ages 10 and 16 — on average 1 to 2 years later than […]

What is a invertebrate chordate? Vertebrates are all chordates that have a backbone. The other two subphyla are invertebrate chordates that lack a backbone. Members of the subphylum Urochordata are tunicates (also called sea squirts). Members of the subphylum Cephalochordata are lancelets. Why are the Urochordates and Cephalochordates called invertebrate chordates? Urochordata (tunicates) and Cephalochordata […]