Food chains start with?

What does an arrow represent in a reaction equation?

S ome people believe that humans have always existed as the species we see today. Darwin created the theory of evolution. Which observation bolsters the theory of evolution? A) Humans have very diverse traits today.

Substance X is placed in a Cup. Its shape does not change. it is then placed on a plate: its shape still does not change Substance is most likely a: A. Solid. B. Liquid C. Gas. D. Plasma

What would be the best way to predict the probability of a baby having cystic fibrosis? a. by studying the parents' karyotypes b. by studying the family's pedigree chart c. by exploring new methods of genetic engineering d.

How would this change affect the electric circuit? A switch is closed, so the circuit would be incomplete and broken and the lights in the circuit would not shine.

A haploid cell has 20 chromosomes. How many chromosomes does the diploid cell of that organism have?

A retrotranspon known as LINE1 is about 1000 base pairs in length and is present in the human genome in about 516,000 copies. Approximately what percentage of the human genome is accounted for by this transposon? a. 0.0017% b. 0.017% c. 0.17% d. 1.

Blood type is a type of gene where both alleles can be expressed. Which statement best explains a person with AB blood type.? A) There is a dominant relationship between alleles. B) There is a codominant relationship between alleles.

Should women who are not pregnant and men be concerned about Zika infection? Explain your response.

What are some of the difficulties with measuring the volume of a gas? Select all that apply. A. it could be soluble in liquid B. it can be difficult to contain. C. it varies depending on the container it is in D. it varies based on its mass