Is it true or false that Science and theories had to be changed many times in light of new observations and findings?

A cladogram highlights what? a. Relationships between organisms b. Phylogenetic associations c. Evolutionary history d. All of the above

Jenna says that an example of homeostasis is when body temperature is maintained at about 37 C. Allen say homeostasis is when breathing rate increases along with exercise. Who is correct

Where does the main process of excretion take place?

Birds such as darwin's finches are adapted to occupy highly specific niches (their role in an environment). would this adaptation make it easy or difficult for such birds to adapt to environmental change? why or why not?

In which of the following ways is DNA replication different from DNA transcription? New cells can only be created after transcription has taken place. Replication results in mRNA strands while transcription creates new DNA.

NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life. Which of the following is good evidence for the presence of bacterial cells? a. The cell size of 0.5 to 2 microns b.

How much rain does a dessert get each year?

Select the correct answer. in a family, the father is affected by a genetic disorder. The son in the family has the same disease, but the daughters do not have it. What type of inheritance is this? A. Y-linked B. X-linked C. Polygenic D. Codominant

Which of these is a heterozygous genotype? Select one: a. Tt b. TT c. ta d. tt

What is the final outcome of meiosis