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marusya05 [52]
3 years ago
13

What is an echinoderm with long spines?

Biology
1 answer:
alukav5142 [94]3 years ago
7 0

The echinoderm with long spines belongs to the class Echinoidea which includes sea urchins, heart urchins, cake urchins and sand dollars. This spine serves as their protective mechanism from predators. The spines are joined to the skeleton and muscles surround it. The muscles enable them to swivel its spines from predators.

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Why is latitude a factor in the uneven heating of Earth's surface?​
Maru [420]

Answer:

deflection of the winds to the right in the southern hemisphere was caused by uneven heating of the earth's surface.

hope it helped

Explanation:

8 0
3 years ago
Read 2 more answers
The two major surviving clades of diapsids include modern animals like snakes, lizards, crocodiles, and ______________________.
kvasek [131]

The two major surviving clades of diapsids include modern animals like snakes, lizards, crocodiles, and birds

A clade is a branch in a cladogram that has a single common ancestor with all of its offspring. An evolutionary tree that depicts the relationships between species' ancestors is called a cladogram. In the past, cladograms were created using similarities among species' phenotypic or physical characteristics.

All hominoids, including humans, chimpanzees, gorillas, orangutans, and gibbons, are members of this group. The Hominoid clade is a subgroup of the Anthropoids, a broader clade that includes Old World and New World monkeys. The use of a phylogenetic tree makes clade identification simple. Just visualize pruning even one branch from the tree.

To learn more about clade please visit
brainly.com/question/9027627
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4 0
1 year ago
Our ----- is part of a network of bloodvesswls that distribute and collect meterials from throughout the body
maw [93]

The question is somewhat confusing.  I would choose "none of the above" because none of the choices are blood vessels.  However, the heart is the pump that moves blood through the network of blood vessels that distribute and collect materials throughout the body.

8 0
3 years ago
Gorging oneself after a period of starvation and then purging the body through induced vomiting and further fasting is a major s
Nastasia [14]
The correct answer is bulimia.
Bulimia is an eating disorder where a person eats as much food as they can, only to throw up everything they have eaten - they induce themselves to vomit to get rid of all the food they took. 
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8 0
4 years ago
A scout on a hike becomes lost. He does not have a compass, but he does have a small needle, a magnet, and some water. He magnet
Makovka662 [10]

Answer:

C. surface tension

Explanation:

Surface tension refers to the property of water or any liquid to enhance its surface area by a certain amount. It is a very important property of water due to which it resists  any external force due to cohesive nature of water molecules.

How surface tension help needle to float on water:

It is a property of water which enhance the attractive force between needle and liquid.

The molecules on the surface of water do not have any force acting from upwards because that side is exposed to atmosphere. This causes a downward force but no upward force on upper surface,so the molecule of surface tend to stay together by forming a thin sheet or imaginary layer.

If weight of any material cannot break surface tension it will float on water surface. This is what happens with needle.Therefore, when needle is placed on water surface with alot of care in horizontal direction, it will not break surface tension and hence will float on water. Please see attached image for better understanding.

Hope it clears up the picture!


6 0
3 years ago
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