Suppose you found a fossil of a clamshell what can you conclude aboth the once-living organism and how it became a fossil?

At what age are infants capable of demonstrating empathy for others, such as comforting and showing concern for others?

Which of the following is a colorless toxic gas that's used in many manufacturing processes? A. Sulfur nitrites B. Photons C. Fossil fuels D. Sulfur oxides

The changing of water into hydrogen and oxygen gas is an example of a: a) physical change b) chemical change c) nuclear change

In the model of DNA, the colored pegs represent the four nitrogen bases found in every DNA molecule. One possible correct labeling suggestion could be

Who was a great general of Carthage? Cincinnatus Poeni Hannibal Philip of Macedonia

What is the difference between an artery and a vein? Group of answer choices An artery carries blood away from the heart; a vein carries blood to the heart. An artery is responsible for carrying blood; a vein is responsible for gas exchange.

A radiation accident leads to a damaged gene in a fruit fly, which leads to improper function of that gene. If this species reproduces asexually, which offspring will inherit a copy of the damaged gene? a. About half the offspring. b.

1) Transcription is the process by which RNA is assembled, base by base, off a DNA template. True or False 2) Observations are date collected with of the senses or tools such as graduated cylinders, balances, rulers, or pH meters.

Which of the following describes how homologous structures provide evidence to support hat life changes over time A. some animals exhibit similar stages of embryonic development B.

Which three of the statements are true? A. Amphipathic (amphiphilic) lipids are the structural basis of biological bilayer membranes. B. The tendency of water to minimize its contact with nonpolar substances is called the hydrophobic effect. C.