A sound wave has a frequency of 20 hz and a wavelength of 100 m. what is the wave speed

A population that is small but more numerous than endangered is considered to be

Which stimulus causes a responding plant to demonstrate phototropism? direction of light intensity of light length of the day time of day

Polymerase chain reaction (pcr) is a powerful tool in molecular biology that is used to amplify a particular dna sequence.

What animal sleeps during the day and is up at night?

What is hypothesis testing?

Milo is observing the things around his family's farm. He writes down four different resources and whether he thinks they are renewable or nonrenewable. The table below shows his notes.

A baby born from a caesarian section (an operation where the baby is removed surgically from the abdomen instead of a vaginal birth) would result in:

What are body waves?

Which of these is NOT considered to be an organic substance? A) carbohydrates Eliminate B) lipids C) metals D) proteins

Which one of the following remains intact after extensive decomposition and can be used to assist in personal identification of remains? A. Blood B. Hair C. Bones D. Muscle structure