Answer:
exoskeleton
Explanation:
An exoskeleton is the hard outer covering that supports and protects some animals without backbones.
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Answer:
lag phase
Explanation:
this is where the organism has little cells hence cell division is minimal hence slow growth
The mitochondria is responsible for producing the energy for cellular processes.
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As the gills does not develop into gills, they are likely to
contribute to the development of the lower jaw of the human embryo though after
the embryonic stage, the gill slits won’t be retained or won’t be a part of a
human as they only appear during embryonic stage for the development of the
lower jaw.
Answer:
Tundra
Permafrost
Only plants with shallow root systems grow in the Arctic tundra because the permafrost prevents plants from sending their roots down past the active layer of soil. ... Some of the plants that live in the Arctic tundra include mosses, lichens, low-growing shrubs, and grasses--but no trees.
The cold climate of the alpine tundra is caused by the low air temperatures, and is similar to polar climate. Alpine tundra is distinguished from arctic tundra in that alpine tundra typically does not have permafrost, and alpine soils are generally better drained than arctic soils.
The tree line is the edge of the habitat at which trees are capable of growing. It is found at high elevations and high latitudes. Beyond the tree line, trees cannot tolerate the environmental conditions.
Explanation:
