Which of the following species is an r-selected species?
a.
giant tortoises
b.
mosquitoes
c.
elephants
d.
redwoods

The correct answer is- b) Mosquitoes.

R- selected species are those species that can survive in unstable, unpredictable environmental conditions and produce large number of small size offspring. These offspring have low survival rate ( short life span) and do not have any parental care.

These species grow very rapidly and attain reproductive maturity at early stage in their lives.

Example of R- selected species- Insects ( such as mosquitoes), rats.

On the other hand, a) , c), and d) are K selected species. They survive under stable environmental conditions and produce large size offspring with very few number. They have long life span and experience parental care

the answer is sex-linked recessive.

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.