A ribosome makes proteins
B cells play a crucial role in the defense of pathogens. They are responsible for producing antibodies that help fight the enemy.
Answer:
Horsetails vary in appearance, but they all lack leaves and have no close relatives. The most similar group of plants are the ferns. They use both their branches and their stems for photosynthesis, as opposed to having foliage. The stalks of the horsetails are almost hollow in the center.
Explanation:
Ecologists are concerned with the use of mathematical models and systems analysis for the description of ecological processes and for the sustainable management of resources
