ASAP PLZZZ HELP NO LINKS 15 POINTS

Heavily muscled cows are often more desirable because of Artificial Selection. The stronger and more healthy, ultimately the more attractive they are in whole. This is why there is an increase in healthier/stronger cows from the product of reproduction. Although, If the cow doesn't have the dominate genes and has incomplete dominance, there are often chances that the cow can be affected by a genetic mutation that can alter the genetic coding of the animal  

Explanation:

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Double-muscled cattle are those that have been genetically altered to reduce the activity of myostatin. This protein limits muscle growth and causes animals to have higher numbers of muscle fibers. These animals also tend to have lower body fat content.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.