What happens when the retina detects light? When a photon reaches your eye it passes through the transparent cornea and then through the lens which refracts and focuses the light onto your retina, where the light is selectively detected and absorbed by special photoreceptor cells: the rods and cones. Why do doctors shine a light […]
Is renewable energy really better?
Is renewable energy really better? Renewables generate more energy than is used in their production, and produce fewer emissions than other power sources over their lifetime. While all sources of electricity result in some GHG emissions over their lifetime, renewable energy sources have substantially fewer emissions than fossil fuel-fired power plants. What are the benefits […]
What is the meaning of uncertainty in decision making?
What is the meaning of uncertainty in decision making? A decision under uncertainty is when there are many unknowns and no possibility of knowing what could occur in the future to alter the outcome of a decision. A situation of uncertainty arises when there can be more than one possible consequences of selecting any course […]
What gases are released when wood burns?
What gases are released when wood burns? When wood is burned, the combustion reaction produces heat and emissions in the form of water, organic vapors, gases, and particulates. The emissions of most concern are carbon monoxide (CO), carbon dioxide (CO2), sulfur oxides (SOx), and nitrogen oxides (NOx). Does burning wood cause global warming? Scientists estimate […]
Is there no friction on ice?
Is there no friction on ice? When a skate moves over the surface of ice, the friction between the skate and the ice generates heat that melts the outermost layer of ice. But ice is still slippery even when you’re standing still. If you stand on ice without moving, no friction exists to generate heat, […]
What are 2 examples of gametes?
What are 2 examples of gametes? Examples of Gametes. The two most common gametes are sperm and ova. These two haploid cells can undergo internal or external fertilization and can differ from each other in size, form, and function. Some species produce both sperm and ova within the same organism. What are 3 types of […]
How do you reply to Savage?
How do you reply to Savage? Funny Responses to Rude Comments Sorry fella, I don’t have the energy to pretend to like you today. Umm…pardon me, I wasn’t listening. Ok. That sounds weird coming from you. Are you always such an idiot, or do you just show off when I’m around? Whatever you say, hefe. […]
What models are useful in describing the growth of a population?
What models are useful in describing the growth of a population? Environmental scientists use two models to describe how populations grow over time: the exponential growth model and the logistic growth model. Carrying capacity: Carrying capacity is the number of individuals that the available resources of an environment can successfully support. What is the difference […]
Is Crisistext legit?
Is Crisistext legit? The Crisis Text Line (741741) is a 24/7 New York-based nonprofit organization that connects people in need with a counselor via text message. Is there a mental health text line? The Crisis Text Line offers free, 24/7 support. Text “EMM” to 741741 to text confidentially with a trained crisis counselor. If emergency […]
What is the correct format for recording data?
What is the correct format for recording data? The correct format to record this data is (9.23 ± 0.21) s or (9.23 ± 0.21) s, where 0.21 s is the uncertainty measured by starting and stopping the stopwatch as quickly as possible. How do you write significant digits? Rules for Numbers WITHOUT a Decimal Point […]