The red legged frog breeds in ephemeral ponds from january through march it’s relative, the bullfrog, breeds in permanent ponds from late march through may

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

surface modification is a versatile tool and has been widely used in material science and engineering that has significantly facilitated the study and characterization of complex materials. at  matexcel, experienced experts in surface science can offer tailored efforts to meet the specific needs from our clients.

amber has allowed scientists to study dna that has been preserved over millions of years.

the answer to you question is   jet streams