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ValentinkaMS [17]
3 years ago
8

Which characteristic is shared by all mollusks and echinoderms?

Biology
2 answers:
Romashka [77]3 years ago
6 0
Some characteristics that is shared is a soft body and an outer shell to protect their body. 
mezya [45]3 years ago
4 0

Both molluscs and echinoderms have the organ system grade of organization. Organ systems such as nervous systems, digestive systems are present. They are triploblastic and are coelomate animals. Both molluscs and echinoderms possess circulatory systems that are predominantly open, symmetrical bodies (radially symmetrical in echinoderms, bilaterally symmetrical in molluscs).

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PLEASE HELP ASAP<br> List and describe the five steps to form sedimentary rocks.
jolli1 [7]

Formation of Sedimentary Rocks Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.

Sure hope this helps you

3 0
2 years ago
Question 1/4
OlgaM077 [116]
I believe the answer is A
7 0
3 years ago
Silica tetrahedra are able to link into long chains that share oxygen ions through the process of ________.
slava [35]
I don't know sorry
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7 0
3 years ago
During what stage does land get ready for the arrival of a new species
34kurt

Answer

           The correct option is B.

Explanation

          Ecological succession of any species is composed of following stages:

A. Migration

            The movement of species from one place to another location for the purpose of setting permanently o temporary is known as migration . Forexample

             Siberian crane (<em>Leucogeranus leucogeranus</em>) that live in the arctic tundra of eastern and western Russia. The eastern population of birds migrate to china while western population of these birds migrate to Iran, India and Nepal during winter season.

B. Ecesis

         The complete establishment of species in new habitat that was completely barren or left barren due to some catastrophe is known as Ecesion. This process is dependent upon the climatic, edaphic and biotic factors. The success of plant depend upon some of the adaptations to withstand the unfavorable conditions which includes both biotic and abiotic conditions.

Forexample

               The process of succession in xerosphere start on barren area from pioneer stage covered by crustose lichen, then foliose lichen followed by moss stage, herbaceous stage and a last by shrub stage.

C. Nudation

       The initiation of new species by major environmental disturbance such as volcano eruption is known as Nudation.

D. Reaction

            It represents the effect of established species on the habitat. Forexample plants alter habitat condition as they grow. They extract raw materials from the environment in large amounts and return metabolic wastes. The waste accumulates in large amounts and differ from the original raw materials, thus altering the environment.  

E. Competition

             The phenomenon which involves struggle for existence between two or more individuals growing in same area, that make excessive demand that are similar in nature on the soil is known as competition.

Such struggle may be in between same species or different species. The competition may be interspecific or intraspecific. Because of completion the weak individuals are eliminated as strong ones are retained.

 


8 0
3 years ago
How and why do organisms interact with one another?
dedylja [7]

Answer:

It's in their makeup to interact

Explanation

They need to interact to survive, to exist, to reproduce!

8 0
2 years ago
Read 2 more answers
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