Which branch of economics studies the economics activities on the whole level of economy? Macroeconomics What is micro economics and macro economics? Microeconomics is the study of individuals and business decisions, while macroeconomics looks at the decisions of countries and governments. Though these two branches of economics appear different, they are actually interdependent and complement […]

What is the difference between a sea lion and a walrus? The sea lions have external ear flaps (pinnae) and long front flippers. Unlike the sea lions, walrus have tusks and whiskers. The tusk and stiff whiskers are the main features that differentiate a walrus from a sea lion. Walrus is also bigger than sea […]

Which limiting factor is influenced by population density? Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases. What is a density limiting […]

Which scenario describes fungi as a decomposer? Since a decomposer feeds on dead organisms, the scenario that describes a fungi as a decomposer is fungus growing on dead leaves. Which scenario describes how fungi are used in agriculture? Answer is ‘ Fungus is used for pest control’. Pests and insects are harmful to the cultivation […]

What are the effects on marine ecosystems if upwelling stopped? If upwelling were to stop, many species of fish would become endangered, and will probably go extinct. Some of the world’s most productive ecosystems in the world, and they support fisheries. How does coastal upwelling enhance fish populations? Areas of coastal upwelling have a greater […]

What happens to the wavelength of a wave if the frequency is increased? The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. […]

How are the body parts of cnidarians arranged? Cnidarians are radially symmetrical (i.e., similar parts are arranged symmetrically around a central axis). They lack cephalization (concentration of sensory organs in a head), their bodies have two cell layers rather than the three of so-called higher animals, and the saclike coelenteron has one opening (the mouth). […]

Which best describes the structure of DNA molecule? The right answer to the given question is option A) A double helix. It best describes the structure of a DNA molecule. Which best describes the structure of DNA answers com? What best describes the DNA structure? The best description is a double helix of Deoxyribose held […]

What does genetic engineering let scientists do? Genetic engineering is used by scientists to enhance or modify the characteristics of an individual organism. Genetic engineering can be applied to any organism, from a virus? to a sheep. What is genetic engineering and how does it work? Genetic engineering, also called transformation, works by physically removing […]

Why is it important for eukaryotic DNA to have multiple origins of replication? Unlike prokaryotes, eukaryotic chromosomes often have multiple origins of replication. Considering the size of eukaryotic chromosomes, this is necessary to finish complete replication in a timely manner. Each of these origins defines a replicon, or the stretch of the DNA that is […]