If the barrel is new or hasn’t been used in a while, its wood might need to expand slightly to plug leaks naturally. Filling it with water allows the moisture to soak into the wood, causing the wood pieces to expand and butt tightly against each other, effectively creating a…
The green lacewing (Chrysoperla sp.) is a common beneficial insect found in the landscape. They are a generalist predator best known for feeding on aphids, but will also control mites and other soft-bodied insects such as caterpillars, leafhoppers, mealybugs and whiteflies. How do you use green lacewings? Use lacewing eggs/larvae…
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case. What is the relationship between…
Group contingencies can be used to help establish classroom rules and routines (asking for help, putting materials away, etc.). Group contingencies can be used when larger groups of students need additional supports to remain on-task and engaged in classroom activities, particularly independent activities. How are group contingencies implemented? Group contingencies…
The songs and the daughter are two halves of one because when apart they are missing something but together they make one. How do those Two Kinds of daughters match up with the two songs at the end of the story? How do those two kinds of daughters match up…
Xylem and phloem arrange themselves in vas- cular bundles. Cutting a cross-section through stem usually shows the xylem on the inner side of the vascular bundle in a stem, while the phloem is found on the outer side of the vascular bundle. Does celery have xylem and phloem? Each tube…
You can control demand characteristics by taking a few precautions in your research design and materials. Use these measures: Deception: Hide the purpose of the study from participants. Between-groups design: Give each participant only one independent variable treatment. How can we control for demand characteristics quizlet? A possible cause for…
English muffins are slightly lower in calories than bread, at 127 calories per muffin versus 157 calories in two slices of wheat bread. For both foods, the majority of these calories come from carbohydrates, an efficient source of fuel for your brain, muscles and other tissues. What makes English muffins…
First, measure the front diameter of the face of the jet – from the outer edge of the left side of the jet straight over to the outer edge of the right side of the jet (going directly across the center). Second, measure the height of the jet. How can…
percentage, average income of the metropolitan area, population of the metropolitan area, and a team playing its first year in a new stadium are all important determinants of ticket price. How are ticket prices determined? Based on factors including the quality of the team, the day of the week, weather…