Which of the following factors made the land a place where the first land plants could thrive? Select the two correct answers.(1 point) Responses abundant sunlight for photosynthesis abundant sunlight for photosynthesis low levels of oxygen in the atmosphere low levels of oxygen in the atmosphere evolution of animals evolution of animals new, nutrient-rich soil made of cyanobacteria and deteriorating rock
The two correct answers are:
1) Abundant sunlight for photosynthesis
2) New, nutrient-rich soil made of cyanobacteria and deteriorating rock
To determine which factors made the land a place where the first land plants could thrive, we need to evaluate each option and select the two correct answers.
1. Abundant sunlight for photosynthesis: This is a crucial factor for plant growth as photosynthesis requires sunlight. The availability of sunlight allows plants to convert it into energy through photosynthesis. Therefore, this is one of the factors that made the land suitable for the first land plants to thrive.
2. Low levels of oxygen in the atmosphere: Initially, the Earth's atmosphere had low levels of oxygen. This was favorable for the first land plants because they evolved from aquatic plants that thrived in a low-oxygen environment. Therefore, this factor also contributed to the land being a suitable place for the first land plants to thrive.
3. Evolution of animals: While the evolution of animals played a significant role in shaping the Earth's ecosystems, it did not directly contribute to making the land a suitable place for the first land plants to thrive. Animal evolution occurred after land plants had already established themselves.
4. New, nutrient-rich soil made of cyanobacteria and deteriorating rock: This factor refers to the development of soil, which occurred over an extended period. Initially, the land lacked nutrient-rich soil. Over time, the breakdown of rocks and the activities of cyanobacteria contributed to soil formation. Although soil is essential for plant growth, this factor was not directly responsible for the initial thriving of the first land plants.
Therefore, the two correct factors that made the land a place where the first land plants could thrive are:
- Abundant sunlight for photosynthesis
- Low levels of oxygen in the atmosphere
The two correct answers are:
1. Abundant sunlight for photosynthesis: Land plants require sunlight to carry out photosynthesis, a process that allows them to convert sunlight into chemical energy.
2. New, nutrient-rich soil made of cyanobacteria and deteriorating rock: Land plants need a suitable substrate to anchor their roots and obtain nutrients. The presence of nutrient-rich soil facilitates the growth and survival of land plants.