When do scientists consider a hypothesis valid?

A.

when the hypothesis is testable

B.

when the hypothesis is published in a scientific journal

C.

when more than one person supports the hypothesis

D.

when experimentation shows it to be true

An explanation for an event based on observation and experimentation is called a) law b) hypothesis c) variable d) theory

Water molecules from Earth's Surface, Water bodies, and Plants enter the U atmosphere to form Clouds Composed Of tiny Water droplets. This Water eventually returns to Earth's Surface through Which Of these Processes

In Africa, dragon color is co-dominant. The colors blue and yellow are co-dominant. Cross a yellow and a blue/yellow dragon.

What is an astronomical unit? a. the average distance between planets in the solar system b. the average distance between the Earth and the moon c. the approximate diameter of the Sun including its atmosphere d.

Normally, a complete set of chromosomes (2n) is passed on to each daughter cell as a result of A) reduction division B) mitotic cell division C) meiotic cell division D) nondisjunction

A population of red squirrelfish breeds and produce offspring, 75% are still red but 25% are yellow. this variation in the color of the squirrelfish can be explained bya) the presence of a mutagen in the environment that caused a color change. b.

During the process of meiosis, how many haploid cells are formed from the original diploid cell?

A researcher identified a bacterial enzyme that is essential in the breakdown of glucose. The researcher wants to test a potential antibiotic that acts on the newly identified enzyme.

What type of bonding exists in network solids?/?

Which of the following statements summarizes the differences between active and passive transport? A. only active transport requires energy (ATP) and moves molecules from low to high concentration B.