Answer:
C. Late Precambrian era
Explanation:
Eon refers to two or more geological eras forms an eon. Eon is mainly divided into four eon namely Hadean, Archean, Proterozoic and Phanerozoic. Phanerozoic includes Palaeozoic, Mesozoic and Cenozoic era. Cambrian falls under the <em>Palaeozoic era </em>which was the major turning point the evolution period of geological time scale. The sudden increase in many diversity of animal phyla was evolved during this period. Also, the first land plant was appeared in this period which gave a promising fact that plants will grow on the apt seasonal conditions.
Answer: False
T-cells get their name from the endocrine gland (thymus) in which they are stored, not from the thyroid gland.
T cells<span> belong to a subtype of white blood cells known as "lymphocytes", that is why T cell are also known as T lymphocytes. The "T" stands for "thymus" -- the small endocrine gland in which these cells mature. It is responsible for a variety of other immune responses.</span>
Answer:
Plants need chlorophyll to conduct photosynthesis
Explanation:
The molecule that can MOST easily pass through the plasma membrane without assistance is carbon dioxide (CO2). Diffusion is a type of passive transport that occurs when molecules move in favor of a concentration gradient.
During diffusion, molecules move high concentration to a region of low concentration.
Oxygen (O2) and carbon dioxide (CO2) are non-polar gasses that move across cell membranes by a process called simple diffusion.
Simple diffusion is a type of passive transport that does not require energy to move substances across cell membranes.
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