Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ……………. surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:

When you login first time using a Social Login button, we collect your account public profile information shared by Social Login provider, based on your privacy settings. We also get your email address to automatically create an account for you in our website. Once your account is created, you'll be logged-in to this account.