Schneider believed in free-cell formation, random spontaneous spawn of cells. Schwann with the support of Rudolf Virchow, believed that cells had to grow from pre-existing cells.
The carrying capacity is the maximum number of a population and ecosystem can handle without species competition. Your answer is D. sixty Have a nice day! :D
Sponges are sessile animals that have specialized cells called amoebocytes and choanocytes.
Sponges (phylum Porifera) are one of the simpllest multicellular organisms (first to branch off the evolutionary tree from the common ancestor of all animals) that have bodies full of pores and channels allowing water to circulate through them. Sponges’ s structure consists of two thin layers of cells and mesohyl layer between them. They don’ t have real tissues or organ systems such as nervous, digestive or circulatory systems. Constant water flow through their openings and pores obtain food and oxygen and remove wastes.
Answer:
A. They are more closely related to tigers than they are to birds.
Explanation: Trust
Answer:
Explanation:These are the seven characteristics of living organisms.
1 Nutrition. Living things take in materials from their surroundings that they use for growth or to provide energy. ...
2 Respiration. ...
3 Movement. ...
4 Excretion. ...
5 Growth.
6 Reproduction. ...
7 Sensitivity.