This leaves us with four basic emotions, according to this study: happy, sad, afraid/surprised, and angry/disgusted. These, the researchers say, are our biologically based facial signalsâthough distinctions exist between surprise and fear and between anger and disgust, the experiment suggests that these differences developed later, more for social reasons than survival ones.
Time seems to freeze when youâre waiting for a lawn to grow. Most people expect fairly quick results, but the truth is different types of grass germinate at much different rates. Some can be expected to sprout within a week. Others can take almost a month.
1 The grass will be ready for your cat to eat in 10 to 14 days after sprouting, or once it has reached a height of four inches, and will last one to three weeks. 2  Continue to keep it in natural light and water daily with a spray bottle.  Do not over water, as this causes mold.