Question of the Day

The phloem moves food substances that the plant has produced by photosynthesis to where they are needed for processes such as: growing parts of the plant for immediate use. storage organs such as bulbs and tubers.

A food web is a graphical model depicting the many food chains linked together to show the feeding relationships of organisms in an ecosystem. It differs from a food chain in a way that the latter is a linear system showing a succession of organisms whereby each species is eaten in turn by another species.

Thermal conductivity can be defined as the rate at which heat is transferred by conduction through a unit cross-section area of a material, when a temperature gradient exits perpendicular to the area.

Objects that can bend without breaking are Flexible. Objects that can stretch and then return to their original shape are Elastic.

Uh-Oh! You spill some orange juice and it has made a huge mess, spreading out all over the floor. This is because________________.

when you blow up a balloon, breathing gas into it, the gas takes the shape of the balloon. Which of the following is true about gases?

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.