5. The similarity in homologous structures between

different species is evidence that they

share a common ancestor.

b. are members of the same genus.

c. use the similar structures in the same way.

d. evolved from each other.

Compare and contrast a compound light microscope and an electron microscope

Determine whether the source given below has the potential to create a bias in a statistical study. Washington University obtained word counts from the most popular novels of the past five years.

If a radioactive nuclide has a half-life of 1.3 billion years, and it is determined that a rock contains 50% of its original amount of this nuclide, about how old is the rock?

The humerus articulates distally with which bone at the trochlea

Why might the brown tree snake or the peregrine falcon serve as "poster species" for causes of the sixth mass extinction?

during the course of successful prenatal development, a human organism begins as a A. embryo and finally develops into a zygote B. zygote and finally develops into an embryo C. embryo and finally develops into a fetus D.

Which of the following statements is true? Choose one: A. Bacteria can undergo cell differentiation without a change in gene expression. B. Only eukaryotes, and not prokaryotes, can undergo cell differentiation. C.

A researcher observed a reduction in the number of chromosomes during cell division for a microbe, he concludes that the microbe must be

students write down some ideas you have about marijuana and smoking or using marijuana. How is the action of THC in the brain terminated after about 30 minutes when half-life of the metabolism is much longer than that.

What is the difference between sperm and egg