Which of the following is an example of centration?
a. a young girl can't write her name.
b. a kindergarten child is unable to recognize whether a group of blocks contains more wooden ones or more round ones.
c. a five-year-old can't color within the lines of a given picture.
d. a young boy can recite his favorite story.

All houses are built according to safety standards, so it is not important to consider injury prevention while at home. select the best answer from the choices provided.otf

Which of these are fast-acting compounds that attack ocygen-dependent tissues known to be particularly sensitive to these compounds? a.nerveb.vesicantsc.cyanide compoundsd.pulmonary

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.