Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Physical Weathering
Mechanical forces acting upon the rocks cause physical weathering. Temperature fluctuations cause expansion and contraction of rock surface resulting in the formation of cracks apd fissures. During cold weather, the water present in rock crevices gets frozen and the formation of ice results in its expansion. The force of expansion causes breaking up of rock. Broken rock fragments roll down the slopes and break further into smaller pieces. Hails, rakfall and fast flowing streams are important agents of physical weathering. You might have seen rounded stone pieces of varying sizes on the bed of river where fast flowing river reaches the plains from its place of origin. Wind is another agent of physical weathering particularly when it carries sand particles which causes abrasion of rock surface, due to friction. In the hill forests, it is commonly seen that tree roots often penetrate through the rock crevices and in course of time, with the radial growth of roots, the rocks get disintegrated.
Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. The diver must hold his or her breath for the duration of the dive. (The
Analysis of Genomic Equivalence of Nuclei Towards the ending of 19th century August Weismann had proposed that during cleavage the genetic determinants (later shown to be chro
Q. How can the tubular-dorsal nervous system in chordates be compared to the nervous pattern present in invertebrates? In chordates the nervous system is dorsal and highly ceph
Cystic fibrosis (CF) is caused by a variety of mutations in the CFTR gene. Imagine you have identified a new single-base pair mutation (A→T) in an exon of the CFTR gene. You wish t
How can we increase of total peripheral resistance? A. A decrease in the diameter of every arteriole. B. An increase of sympathetic discharge to all the smooth muscles
what are diploblastic organisms?
method of digestion in porifera
Adaptive radiation: The growth of a variety of species from the single ancestral form; occurs when a new habitat becomes accessible to a population. The evolutionary pattern of di
What is Plastids? The most obvious difference between plant cells and other eukaryotic cells is that cells of most plants contain unique organelles called plastids, which inclu
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd