It would be easier if you provided any options, because researchers discoverd a lot of stuff about that. But if you want to know my opinion about cultural influences on personality, here's my answer: Researchers focusing on cultural influences on personality have discovered that culture<span> is one of the most important environmental factors that shapes personality.</span>
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https://www.researchgate.net/publication/263703355_Management_challenges_of_Didymosphenia_geminata
b. commensalism
d. coyote is at the top of that chain so it gets the least energy
c. mistletoe is a parasite. the other options aren't symbiotic relationships
<span><span>The blood cells containing hemoglobin, that transports oxygen (O2) to the body tissues of vertebrates, are called red blood cells.</span> Red blood cells (RBCs), are also referred to as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes<span>, (from Greek erythros for "red" and kytos for "hollow vessel"..RBCs take up oxygen in the lungs and release it into tissues while squeezing through the body's capillaries.</span></span>
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Answer: All the above options are correct about the characteristics of Lumbriculus variegatus.
Explanation:
Lumbriculus variegatus also called the black worm belongs to the phylum Annelida and is used by biologists to illustrate:
-blood vessel pulsations,
-swimming reflex,
-peristaltic crawling behavior,
-giant nerve fiber action potentials.
These studies where carried out on them due to the characteristics they possess. These includes:
-its blood circulates in a closed circulatory system
-Freshwater worm found throughout North America and Europe
-Prefers the shallow habitats found at the edges of ponds, lakes, or marshes
-Feeds on decaying vegetation and microorganisms.
