describe how coal is formed, where it gets its original source of energy from, and why its distribution varies around the world, then state whether coal is likely to formed today

How are sperm and egg cells different from most other animal cells?

How can a plasmid be described? A. a small organelle B. a small loop of DNA C. a prokaryotic ribosome D. a prokaryotic membrane

What can cause extinction of a species

How will a punctured lung affect your ability to inspire? a. Air pressure is unable to increase, and lung volume cannot decrease b. Air pressure is unable to decrease, and lung volume cannot increase c.

Imagine that you have been given the job of setting aside habitat to preserve the diversity of birds in a swath of lowland rainforest. Three plans have been proposed, each of them totaling 200 km2. Plan A consists of 20 small, scattered reserves.

How does random fertilization add to genetic variation? a) reshuffling of randomly picked up chromosomes b) random fusion of genetically unique gametes c) exchange of genetic material between homologous chromosomes

When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is what?

Which statements about a child with brown eyes must be true? Choose more than one answer

I observe that squirrels that live in the southeastern United States are much thinner than squirrels that live in the northeastern part of the country.

66) homologous chromosomes move toward opposite poles of a dividing cell during; a) mitosis.; b) meiosis i.; c) meiosis ii.; d) fertilization.; e) binary fission.