Mutation are two types somatic and germ cell mutation...as there is mutation in germ cell it will alter the normal behavior and produce variation !
random fertilization also causes variation as different setup of genes meets with another different...so chances of variation increases !
and third crossing over is in meiosis when chiasmata forms....so in this two homologous chromosome attach to each other and on separation ... some part exchange so leads to variation !
Answer:
Both of the cells make use of the cell membrane to regulate ion movement ... So another way that channels can be categorized is on the basis of how they are gated. ... When the cell is at rest, and the ion channels are closed (except for leakage ... What has been described here is the action potential, which is presented as a
The last one: Carbon dioxide is released into the atmosphere
Answer:
they can fly , which requires alot of energy & keep their body warm with their feathers
Answer:
D
Explanation:
However, the organ systems also work together to help the body maintain homeostasis. For example, the cardiovascular, urinary, and lymphatic systems all help the body control water balance. The cardiovascular and lymphatic systems transport fluids throughout the body and help sense both solute and water levels and regulate pressure.
