1. Qué es la inmunidad artificial y natural? Explica detalladamente como reaccionan frente a un virus. 2. Qué es la inmunidad artificial pasiva y activa? Qué es la inmunidad natural artificial y pasiva?

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.

segmented body, an exoskeleton made from chitin, and joint appendages.