What technological advancement was necessary before scientists could begin to observe cells? invention of the magnifying glass invention of the microscope invention of the telescope invention of the thermometer

Organism with two different genes for a trait

Which method can be used for separating a mixture of sand and salt? a. evaporation b. magnetism c. distillation d. filtration

Which is NOT a vector that carries and transmits pathogens to humans and other animals?

Structures such as columnar joints are found near gullfoss in the reykjanes peninsula. How were these structures created?

Are the Celosia Plant flowers the plant seeds?

A mutation is a mistake or change in the

Special proteins produced by the body to attack foreign invaders such as pathogens are called:

In cellular respiration, the energy for most ATP synthesis is supplied by: A. High energy phosphate bonds in organic molecules B. A proton gradient across a membrane C. Converting oxygen to atp D.

Two factors which cause global climate change are listed below. factor 1: mountain building. factor 2: changes in the amount of atmospheric gases. which of these statements is correct about the two factors which cause global climate change?

Is a post oak tree is a autotrophic or heterotrophic