The major muscles involved while performing a wall sit or squat are the quadriceps muscles.
Explanation:
Exercises like wall sit or squat are an isometric exercises which works the entire group of lower body muscles.
Isometric exercises are endurance building exercises which improves the muscle endurance by holding it in a position for longer time. These exercises does not involve any big bodily movements but works by tensing the muscles.
Both these exercises primarily involve the front thigh muscles or the quadriceps. Squats and wall sits help to tone and shape the quads and other muscles involved. The angle of the body should be maintained at right angle to reduce the pressure on these muscles.
Other muscles which are involved in these exercises are the hamstrings, core, lower back muscles etc.
Answer;
Animals with thick fur
Explanation;
-It is worth noting that organisms that live in the savanna and grassland biomes have developed unique adaptations that aid in their survival. Savannas differs from grassland in that savanna have shrubs and isolated trees, while grasslands contain grasses, flowers, and herbs.
-Animal adaptations for example; Many animals have very effective locomotion for long-distance migrations to coincide with the seasonal flush of growth.
-Additionally, many forms burrow to avoid predation and desiccation, and many others use these burrows. These and other characteristics aid survival of organisms in savanna ecosystem.
B is the answer, unsaturated then saturated then supersaturated
Answer: A. By selecting dominant genotypes
Explanation:
Artificial selection or selective breeding can be defined as the induced breeding process in which humans select parents of plants and animals that have desired traits that are beneficial for them to produce offspring that have characteristics of both parents and they are of improved yield and quality. This brings the change in the phenotypes of the offspring as compared to the parents. As the passage of dominant desirable traits in the genotype from either of the parent when gets expressed then the phenotype of the organism also change.
<span>A polygenic trait is contributed by two or more genes one gene two alleles multiple alleles. True!</span>
