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Montano1993 [528]
3 years ago
6

Fill in the blank. The ____ of animals is based on scientists' current understanding of the evolutionary history of living speci

es. Although they are radially symmetrical, echinoderms are more closely related to a human than to a jellyfish because they are ______
Biology
1 answer:
VARVARA [1.3K]3 years ago
7 0
The behavior of animals is based on scientists' current understanding of the evolutionary history of living species. Although they are radially symmetrical, echinoderms are more closely related to a human than to a jellyfish because they have a skeleton.
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Scientists have conducted multiple experiments on cancer cells to determine how they reproduce. All studies have shown the same
Sonbull [250]

Cancer cells reproduce the same way the other cells reproduce. The difference between cancer cells and others is that their reproduction is uncontrollable. They constantly go through the cell cycle and they reproduce. Two ways cell reproductions are meiosis and mitosis. DNA duplicates itself. Cancer is incessantly receiving messages.

6 0
3 years ago
Read 2 more answers
I just need a bit of help answering this one. (:
faust18 [17]

If we take the wolf as a species, then we can easily find its place and evolutionary path through this cladogram of chordates. The wolf is a vertebrate, so we start from vertebrae. It is an animal that has jaws and paired appendages. Continuing further up the cladogram we reach the development of lungs, and the wolfs have lungs for breathing. Then we come to the development of four limbs, and the wolfs have four limbs. Next comes the endothermy, meaning that the animal is able to regulate its own body temperature, thus it is warmblooded, and the wolfs are warmblooded animals. As last we come to the mammals, and the wolfs are part of the mammals, so we can classify them in that branch of the chordate cladogram.

6 0
3 years ago
Which two phenomena are evidence that gravitational forces are attractive? Select two statements.
Vinvika [58]

Answer:

A. the rise and fall of the tides.

C. a dropped object always falls toward Earth.

Explanation:

Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Additionally, the gravity of earth makes it possible for all physical objects to possess weight.

The two phenomena which are evidence that gravitational forces are attractive includes;

I. The rise and fall of the tides: this is caused as a result of the gravitational force of attraction exerted by the moon on earth.

II. A dropped object always falls toward Earth: this acceleration is due to the gravitational force of attraction between the Earth and the object.

7 0
3 years ago
What’s the answer to this
den301095 [7]

Answer:

3 and 4 are most closely related.

5 and 6 are also most closely related.

7 0
3 years ago
Zaznacz wszystkie przystosowania płazów do życia tylko na lądzie. Uwaga: niektóre opisy dotyczą przystosowań do życia zarówno w
Gekata [30.6K]

Translation in English:

Check all amphibians' adaptations to life only on land. Note: Some descriptions refer to adaptations to life both in water and on land

The webbing stretched between the toes of the hind legs.

A Nostrils located on the upper side of the head.

B Hind legs long and well-muscled.

C Gas exchange through the lungs.

D Eyes protected by lids.

E The body is covered with a thick layer of mucus.

Answer:

And someone else can figure out the answer I need to leave but I would say the answers are  B, C, and D

Polish Translation:

Tłumaczenie na język polski:

Sprawdzaj przystosowania wszystkich płazów do życia tylko na lądzie. Uwaga: Niektóre opisy odnoszą się do przystosowań do życia zarówno w wodzie, jak i na lądzie

Taśma rozciągnięta między palcami tylnych nóg.

Nozdrza znajdujące się w górnej części głowy.

B Tylne nogi długie i dobrze umięśnione.

C Wymiana gazowa w płucach.

D Oczy chronione przez powieki.

E Ciało pokryte jest grubą warstwą śluzu.

Odpowiedź:

Ktoś inny może znaleźć odpowiedź, której potrzebuję, ale powiedziałbym, że odpowiedzi to B, C i D.

7 0
3 years ago
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