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3 years ago

1. What evidence supports the notion that sponges are some of the earliest known multicellular animals?

1 answer:

8 0

Answer: "Chemical fossils"evidence supports the notion that sponges are some of the earliest known multicellular animals.

Explanation:

Sponges are multicellular animals, may belong to Ediacarian period likely to be 80 million years ago or earlier. They catered through a complex system of internal channels, by moving seawater.

Sponges are soft-bodied and very rarely protected as fossils, therefore finding evidence of existence is giant task. The key of their existence came to know from abnormal chemicals which is a steroids of a particular type generated sufficiently by them but virtually never by ordinary organisms.

Analysis of long strata sequence found in Oman and researchers have been able to extract these "chemical fossils" from samples spanning tens of millions of years — before, during and after the Ediacarian period.This gave clear evidence that sponges had to have evolved long before the great variety of multicellular organisms proliferated at the dawn of that time.

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1.write the chemical equation for transpiration

kotykmax [81]

Answer:

1).6CO2 + 6H2O — > C6H12O6 + 6O2. the equation for

transpiration .

2).Translocation is a biological mechanism involving the transfer of water and other soluble nutrients from one part of the plant to another through the xylem and phloem, which occurs in all plants.

Explanation:

hope it will help you

4 0

2 years ago

Give 3 characteristics of the FIVE phylum in chordata

aleksley [76]

Answer:

notochord, a dorsal hollow nerve cord and pharyngeal slits.

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3 years ago

Match the given symbol or molecular formula to the term that best describes it.

tankabanditka [31]

Answer:

EA SPORTS

Explanation:

SO2: inorganic compound

k: element

Cl2: inorganic elemental molecule

C6H6: organic compound

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3 years ago

You get home from school and grab a bag of potato chips before settling onto the couch to binge watch your newest Netflix series

snow_tiger [21]

Answer:

Explanation:

Osmosis is the process in which the molecules of a solvent move from a region of low concentration to a region of higher concentration through a semi-permeable barrier.

While eating the chips, the salt content from the chips makes the surrounding solution of the cells to have an increase in salt concentration causing an hypertonic solution. An hypertonic solution is a solution that has more solute (salt) than the (solute in a) cell. This increase in salt concentration around the cells causes the cells to release water to neutralize the high salt concentration in the solution around the cell (in order to maintain homeostasis) which causes dehydration in the individual and hence making the individual to be thirsty. The body attempts to maintain balance by passing this excess salt out of the body in the form of urine hence the reason for the dark colour in the urine (because if the body doesn't rid itself of the high salt concentration, the cells could shrink and die as a result).

3 0

3 years ago

Which statement explains why earthquakes tend to be deeper near subduction zones?

ICE Princess25 [194]

Answer:

Option C, At a subduction zone, oceanic crust is forced deep into the Earth.

Explanation:

At sub-duction zone, the dense oceanic plates coincides with the less dense continental plates and thus sink below the continental plates. Sometimes these oceanic plates being dense, sink to greater depth with in the earth’s mantle. The sub-duction zone causes earth quakes of high intensity when oceanic crust penetrates to greater depths of earth crust as they tend to change the rheology of the earths’ mantle and also causes bending of plates

Hence, option C is correct

5 0

3 years ago