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sammy [17]
2 years ago
7

Which of the following are characteristics of arthropods? 1. Protostome development 2. Bilateral symmetry 3. A pseudocoelom 4. T

hree embryonic germ layers 5. A closed circulatory system
Biology
1 answer:
Alika [10]2 years ago
6 0

Answer:  1. Protostome development./2. Bilateral symmetry/4. Three embryonic germ layers

Explanation:

Over 600 million years ago some animals invaded aquatic and terrestrial environments in the pre-Cambrian period. These animals were enforced by huge evolutionary irradiation, and now they occupy every environment on planet Earth. From tiny insects and crustaceans smaller than 1mm in length to giant crabs from Japan that can reach 3m (with open legs), the arthropods are found in all size models, with an estimated number of more than one million species described. Concerning characteristics they are - Bilateral, triploblastic( Three embryonic germ layers), prostomial. Internally and externally segmented body, divided into at least two regions, head, and abdomen; typically with a cephalic shield or carapace. Opened circulatory system; the dorsal heart is a muscle pump with lateral Ostia for blood return.

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____are compounds that produce H+ ions in solution.
kap26 [50]

Answer:

An acid is a substance or compound that releases hydrogen ions (H+) when in solution. In a strong acid, such as hydrochloric acid (HCl), all hydrogen ions (H+), and chloride ions (Cl-) dissociate (separate) when placed in water and these ions are no longer held together by ionic bonding.

4 0
3 years ago
How are rhizomes involved in asexual reproduction of ferns?
Rasek [7]

Answer:

The sporophytes of ferns grow through the rhizome

Explanation:

The gametophyte are responsible for sexual reproduction in plants while the sporophytes are usually responsible for asexual reproduction in plants.

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7 0
2 years ago
Succession occurs when environmental factors affecting an ecosystem change. True or False
zhannawk [14.2K]

Answer: True

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Topographical : These are the change in the region or habitat were succession occurs. Landslides, volcanic eruption, glacier melting etc. are the examples , as these topographical changes can bring reformation of the landscape. The disturbance caused by these topographical changes will allow the disturbance tolerant species to repopulate the habitat.  This can be a transition from primary to secondary succession.

Soil : It is an abiotic factor.The growth of the plants requires suitable soil conditions. The type of soil will affect which species will inhabit the area. The soil moisture and pH greatly affect the number of plant species in an area.

Climate : It can influence the direction of succession. Climatic factors includes rain, wind etc. For example a region lacking proper rainfall the species will be tolerant to dry and drought conditions. The region with heavy rainfall, the species will be more tolerant to moisture. Wind being a climatic factor can cause wind erosion affect the soil quality. Wind can lead to heavy forest fires can therefore, wiped out community.

8 0
3 years ago
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Please help, online school is sucking rn :(
gayaneshka [121]
I feel you the first one
3 0
2 years ago
true or false Science is a collection of facts that does not evolve. We have gained all the knowledge we can from science.
Burka [1]

Answer:

false

Explanation:

with new knowledge , science evolves.

6 0
1 year ago
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