Which of these is an example of natural selection?

A: decrease in the height of tomato plants over one generation
B: penguins migrate farther than their parents to hunt for fish due to climate
change
C: puppies having a different color coat than their parents
D: increase in insect survival rate after exposure to insecticide over many
generations

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere