What organisms are usually the first pioneer species on the scene after new land has formed?

Explain how scientists use geologic time to determine the age of landforms.

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture