What do we call atoms of an element that have a different number of neutrons?

Many features distinguish modern humans from the nonhuman apes. However, only two of these features define hominins. Why? A. Proper taxonomic groups are always defined by the traits that all members of the group share. B.

Back on planet Palomar, you discover a new animal that you would like to classify. You find that the animal has three embryonic tissue layers, it has a body cavity that is not entirely line with mesoderm, and its mouth forms first during embryonic

Object has a mass of 77kg and acceleration of 2.3m/s2. Calculate net force

The weakness of hydrogen bonds between the bases of DNA allows what?

Two genes of a flower, one controlling blue (b) versus white (w) petals and the other controlling round (r) versus oval (o) stamens, are linked and are 10 map units apart. you cross a homozygous blue-oval plant with a homozygous white-round plant.

Why the average yearly temperature at the north pole is - 18c while the average yearly temperature at the equator is 27c?

The separation of a group of individuals from the rest of the population is referred to as

The following are features of mitosis or meiosis. can you put them in groups. im so confused : allows for transmission of chromosomes to offspring, necessary for growth and regeneration, allows for regeneration of an organism, two identical diploid

What is the MAIN cause of increased erosion, especially for soil? A) strong winds B) flash floods C) human activity D) movement of glaciers

Why do most biologists consider RNA to be life's first coding system?