What does infectivity mean? : the ability to produce or transmit infection : the quality or state of being infective The onset of cough on the second day of illness in this patient, followed by clinical evidence of pneumonia four days later, raised the question of his infectivity during the four days before hospitalization.— What […]
Which plants disperse their seeds by wind?
Which plants disperse their seeds by wind? Wind dispersal Seeds from plants like dandelions, swan plants and cottonwood trees are light and have feathery bristles and can be carried long distances by the wind. Some plants, like kauri and maple trees, have ‘winged’ seeds. What are the 5 types of seed dispersal? There are five […]
How reflected light can be reflected again?
How reflected light can be reflected again? Reflected Light can be Reflected Again When two mirrors are placed opposite to each other, the first mirror reflects light that falls on its surface. The periscope makes use of this concept by using two plane mirrors. Periscopes are used in submarines, tanks and also by soldiers in […]
Which statement best describes the energy changes?
Which statement best describes the energy changes? The correct answer would be that atoms gain energy during evaporation and boiling. What are the 5 signs of a physical change? A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes […]
How long does it take for iron to rust in salt water?
How long does it take for iron to rust in salt water? it will start almost immediately, and may progress at a rate of around 1/2mm per year. This rate will vary depending on the alloy and water conditions. How do you speed up the rusting process? Direct sunlight helps speed up the rusting process. […]
What are 5 benefits of cardiovascular fitness?
What are 5 benefits of cardiovascular fitness? Some of the many benefits of cardiovascular exercise include: increased heart muscle strength. improved cholesterol. stress reduction. lowered blood pressure. mood and self-esteem boost. weight control. improved sleep. What is cardiovascular fitness and give 2 examples? Viable options include hiking, jogging, cycling, rowing, running, and elliptical training. Just […]
How can you increase the solubility of a solution?
How can you increase the solubility of a solution? For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions. How do you recover solutes […]
How many watts does it take to lift 1kg?
What happens if you cover half of a lens?
Where is urine not modified?
Where is urine not modified? The kidneys are the only means for eliminating the wastes that are the end products of protein metabolism. They do not themselves modify the waste products that they excrete, but transfer them to the urine in the form in which they are produced in other parts of the body. Do […]