What is the smallest unit that makes up matter

The illustration show a kind of animal that is free-living organism. What is the common name of this organism? (My class is Live Science, but it doesn't have an option)

The process by which energy is released from nutrients is called

To switch between activating the fill and activating the stroke, you should press which key?

Which of the following is not a negative consequence of upward urban growth? A) pollution B) creation of a "heat island" C) land for growth becomes scarce D) waste management issues E) increased use of surrounding land

Which of the following materials is an insulator against electric current? A. Aluminum foil B. A silver spoon C. A copper penny D. A glass pane

Two children playing on a frictionless garden gate invent a new game called "gate". The idea is that they will get on opposite sides of the gate and each push such that the gate does not move.

What is the frequency of 20 mm microwaves? A) 100 MHz B) 400 MHz C) 15 GHz D) 73 GHz E) 98 GHz

A measure of how much pulling, or tension, a material can withstand before breaking is - A. hardness. B. brittleness. C. tensile strength. D. malleability.

How work done against gravity can be expressed?

An electron is acted on by two electric forces, one of 2.7*10-14 N acting upward and a second of 5.8*10-14 N acting to the right. What is the magnitude of the electric field at the electron's location?