ECM is the extracellular matrix, or the set of extracellular molecules secreted by cells with the purpose to support surrounding cells. In plants the cell wall is the ECM and in mammals ECM can be in the form of fibrils and may constitute a significant portion of the bulk of the organism and it also referred as connective tissue.
Fossils give information about the time period in which organisms lived in the past.
Answer:
El Niño: warms water
Both: Occurs in Pacific Ocean & impacts climate
La Niña: cools water
Explanation:
Just did it on edg, hope it helps!
The correct answer is this one: "A.When actin filaments are pulled toward the center of the sarcomere, the fiber shortens." The statement that accurately describes the way in which a muscle moves is when actin filaments are pulled toward the center of the sarcomere, the <span>fiber shortens</span>
seed coat protects the cotyledons and embryo from outer environment and from attack of pathogens
pollen grain has a sculptors covering with weak points(germ pores) in it through which pollen tube comes out.
A spore is generally protected by 2-3 tough resistant walls around to tied over the unfavourable conditions.
