Answer:
The rise in the level of water indicates that CO2 is produced by germinating seeds during respiration. Actually, the germinating seeds respire and produce CO2.
 
        
             
        
        
        
Answer: 
 
All cells hace a barrier around them that separates them from the environment and from other cell.The barrier is called the plasma membrane,or cell membrane.
 
        
             
        
        
        
Answer:

Explanation:
All the sensory information through sensory neurons must pass through the thalamus.
<u>Thalamus:</u>
- connects cerebral cortex and midbrain.
- collects information from the midbrain and passes it to the cerebral cortex.
- is involved in more functions such as; detects sensations of visual, auditory, and gustatory systems.
- is concerned with memory, emotions.
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Answer:
Single-cell organisms
Explanation:
In 1735, Linnaeus introduced a classification system with only two kingdoms: animals and plants. Linnaeus published this system for naming, ranking, and classifying organisms in the book "Systema Naturae". In the epoch that Linnaeus created this system, single-cell organisms such as bacteria and protists were almost unknown. In 1866, E. Haeckel added a category including both bacteria and protozoa, thereby adding a category formed by single-cell organisms (different from animals and plants). During the 1900-1920 period, bacteria were classified as a separated kingdom named 'prokaryotes'. The current three-domain classification system was introduced by C. Woese in 1990. In this system, all forms of life are divided into three different domains: archaea, bacteria, and eukaryote domains (this last composed of protists, fungi, plants and animals).
 
        
             
        
        
        
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