That's a hard question.i had the same question and didn't get an answer
The first one is contour plowing
Many cacti have roots that spread out widely, but only penetrate a short distance into the soil. In one case, a young saguaro only 12 cm (4.7 in) tall had a root system with a diameter of 2 m (7 ft), but no more than 10 cm (4 in) deep.
In other words they can't penetrate that deep.
The color would be yellow. For example, there is a yellow zone and curb at the hospital for you to pick up and drop off
Answer:
~ Three types of lipid are found in biological membranes, namely phospholipids, glycolipids and sterols.
Explanation:
~ Phospholipids consist of two fatty acid chains linked to glycerol and a phosphate group. Phospholipids containing glycerol are referred to as glycerophospholipids