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Masteriza [31]
3 years ago
9

Explain what is unique about the marine worms' digestive and circulatory systems?

Biology
1 answer:
miss Akunina [59]3 years ago
3 0

Answer:

These worms have a mouth on their lower, or ventral, surface through which they take in food as they move along rocks and other sub- strates. ... Food enters the mouth and is digested in the intestine; the nutrients diffuse throughout the body (there are no circulatory or respiratory sys- tems).

Explanation:

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Factors that remain constant from experiment to experiment are the
alexandr402 [8]

Answer:

Factors that remain constant from experiment to experiment are the constants.

Explanation:

A constant in an experiment is also known as a <em>control variable</em>. It is the part of an experiment that must stay the same in order to validate the experiment. If the constant were to change, the results would be skewed and therefore false.

i.e. you want to test the rate of growth of lima bean plants in different types of lighting. You believe that a lima bean plant that grows in yellow will grow faster and stronger than a lima bean plant that grows in blue or red light.

In this experiment, the constant would be the lima bean plant. You cannot change the type of seed or else your experiment is invalidated. If you tried to use a sunflower seed in the blue lighting and a tomato seed in the red lighting, your results would be invalidated and skewed.

7 0
3 years ago
Which of the following is the most accurate measurement of the amount of matter in an object? weight mass volume density
emmainna [20.7K]

Answer:

Mass

Explanation:

I'm not for sure but I think its Mass. Please let me know if that was right or wrong.

4 0
2 years ago
Based on what you were told about the reproduction of the snails, write a question that could be researched
ValentinkaMS [17]

Question: If they aren't hermaphrodites, can they still be male and female at the same time?


Facts: Different snails reproduce differently, but most snails are "hermaphrodites." Being a hermaphrodite means that any given snail can be both male and female at the same time. This can make it a lot easier for snails to reproduce and quickly make a whole lot of snails! Some hermaphrodite snails do not need another snail to reproduce, but can make more snails all by themselves (this is called asexual reproduction). Other snails are hermaphrodites but still need another snail to reproduce (this is called sexual reproduction). There are also some snails that aren't hermaphrodites, but are either male or female, and must find a snail of the opposite sex to breed with.

8 0
3 years ago
Read 2 more answers
Question 2 of 10
Irina-Kira [14]

Explanation:

The correct answer is the nervous system. It is because the CNS or the nervous system is the one responsible for sending or transmitting signals from the brain throughout the body in order for it to function, this also involves of having to communicate, process and store memory in an individual.

5 0
3 years ago
The ________ is an example of a modern convergent boundary where two continents meet.
Helga [31]
Covelent bond is the two
8 0
3 years ago
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