1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
guapka [62]
3 years ago
11

How long ago did invertebrates become common on Earth? 1.6 million years ago 132 million years ago 410 million years ago 520 mil

lion years ago
Biology
2 answers:
Alja [10]3 years ago
3 0

520 million years ago

statuscvo [17]3 years ago
3 0

The correct answer is option D, 520 Million Years Ago

Reason -

The first invertebrates occurred in the oceans in the form of soft body animals which are covered by shell. These organisms appeared in the water bodies some 5 billion years ago (500 million years ago). The other species include the arthopods (insects), mollusk(snails and octopus) , annelids (Earthworm and leeches) etc. also evolved some 490 million years ago.

You might be interested in
.Soil and plants are not considered nitrogen reservoirs true or false?
s344n2d4d5 [400]
False the answer is it is false
4 0
3 years ago
Read 2 more answers
What are three animal that have something in common? named them and why?
Arada [10]
Platupus, chicken and snake they all lay eggs
8 0
4 years ago
Read 2 more answers
Darwin observed a variety of tortoises on the Galapagos Islands. These observations provided evidence for which of these stateme
mars1129 [50]

Answer:

B) Species vary over time

3 0
3 years ago
Read 2 more answers
Describe one major change that occurred in<br> the development of the modern atomic model.
NNADVOKAT [17]

Answer:

The one major change that occurred was the placement and organization of the electron.

5 0
4 years ago
Carrying capacity is Group of answer choices seldom reached by marine producers and consumers because of the vast resources of t
-Dominant- [34]

Answer:

the maximum population size that a particular environment can support.

Explanation:

A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.

Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons.

Population regulation can be defined as a biological process that balances limiting factors affecting the growth of a population based on density. The factors that regulate the growth of a population are divided into two (2) main categories and these includes;

I. Density-independent factors.

II. Density-dependent factors.

Density-dependent are regulating factors such as predation, diseases, and competition that affect the size of the population of living organisms through decreasing or increasing mortality and birth rate.

Furthermore, density-independent factors do not have an increasingly greater effect as a population's density increases. Thus, its effect are reduced as a population's density increases in size.

Carrying capacity is the maximum population size that a particular environment can support. The carrying capacity of an environment is denoted by the letter k.

5 0
3 years ago
Other questions:
  • Two tongue-rollers have 12 children. 8 of their children can roll their tongues and 4 cannot. Make an argument about the genotyp
    8·2 answers
  • The brain is the center of all thoughts, perceptions, and emotions. <br> True or False
    10·2 answers
  • Select the answer that best explains why Caitlin has blue eyes and Jack has green eyes.
    15·1 answer
  • a 4.24 kg marble slab has a volume of 1564 cm^3. what is it's density in g/cm^3? give you answer to the nearest tenth
    9·1 answer
  • Several medicines that treat human diseases have been sourced from plants in tropical rainforests. For example, quinine, which i
    15·2 answers
  • Which organism would receive the least amount of tramsferred solar energy Owl,field mice frog,or grass
    15·1 answer
  • Which of the following are reasons Earth's atmosphere makes conditions suitable for life? (multiple answers)
    10·1 answer
  • What is amylopectin?​
    8·1 answer
  • CHROMOSOMES AND INHERITANCE VOCABULARY REVIEW Distinguish between the terms in each of the following pairs of terms. X-linked ge
    11·2 answers
  • the initial consequences of oxygenic photosynthesis are: removal of carbon dioxide and replacement of molecular oxygen in the en
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!