Answer:
A) actin and myosin is a correct answer.
Explanation:
- Myofibrils are the contractile fiber and they are made of actin and myosin.
- Myofibrils are made of thick myofilaments and thin myofilaments.
- Thick myofilaments are made up of myosin whereas thin myofilaments are composed of actin.
- The functional unit of muscle is Myofibrils and contraction of muscle occurs due to myofibril, when the filaments actin and myosin interact with each other.
Thus Myofibrils are made primarily of (A) actin and myosin.
D) It enlarges continental landmasses and forms mountains along the edges of continents.
<em>Hope this helps!</em>
1. holes to hide in for shelter
3. competition with deer eating the same plants
That would be animals getting isolated into different groups in different locations. These animals would have to breed AND adapt to that location, otherwise they will become extinct. When each species adapts and breeds to agree with a different location, that would be called speciation.
Explanation:
Carrying capacity is determined by limiting factors.
Carrying capacity is determined by limiting factors which affect the amount of resources available. Limiting factors may include water, space, nutrients, minerals, light, etc.If we're discussing carrying capacity in the context of a species, the number of available mates, predation, disease, or competition with another species could determine the species' carrying capacity. For example, a species of bird may have plenty of space and but if it needs to compete with another species for food, the degree and extent of competition will limit the population.
Or there may be plenty of available habitat, food, and water for tigers in India, but if there are only a few tigers breeding and producing offspring, the carrying capacity of the species will be determined by the number of females producing young.
Many of these same limiting factors apply when we refer to the carrying capacity of an ecosystem. For example, in a desert ecosystem, there may be plenty of available space, but the number of organisms the system can hold may depend on the amount of water.
Another ecosystem may be limited by nutrient-poor soil. If the soil in an area is low in nutrients, fewer photosynthetic plants will be able to grow, which means less food for organisms consuming the plants, which means less food for organisms that eat those organisms, and so forth. The nutrient concentration of the soil affects the carrying capacity of the entire ecosystem.
