answer.
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
viva [34]
2 years ago
14

Which of these organisms were around during the Cambrian period 500 million years ago?

Biology
1 answer:
Alla [95]2 years ago
8 0

Answer:

c

Explanation:

You might be interested in
Which of the following statements is true?
Mademuasel [1]

Lysosomes and chloroplasts are unique to plant cells.

5 0
2 years ago
Read 2 more answers
Julio wants to study the effect of water temperature on hatching of fish eggs in a lake which these experiment designs would be
almond37 [142]

Complete Question: Julio wants to study the effect of water temperature on the hatching of fish eggs in a lake. which of these experimental designs would be most practical for julio?

a. he should put fish eggs in aquariums of lake water kept at different temperatures and observe.

b. he should build a computer model of fish eggs in a lake that has many different water temperature settings.

c. he should use cameras to observe fish hatching in the lake and temperature probes to monitor water temperature.

d. he should take water samples from lakes of different temperatures and observe for eggs and newly hatched fish.

Answer: is <em>a). he should put fish eggs in aquariums of lake water kept at different temperatures and observe. </em>

Explanation:

By viewing all four options the most accurate and near to possible is <em>option A. </em>Other three techniques are not doable and have higher chances of inaccuracy. The results fetch from other techniques will contain various error which results in wrong findings. Instead of studying and controlling whole lake water temperature, a sample of water lake should be taken and adjusted it's temperature accordingly under observation in a controlled and monitored environment. By doing so, the eggs can be monitored and observed under an adjusted temperature with full accuracy. Hence option A is more suitable and more realistic approach in finding the desired results.

8 0
2 years ago
Some tortoises that feed on grasses were observed on an island. Some years later, an environmental change caused the grasses to
satela [25.4K]
<span>The most expectant evolutionary feature would be longer necks. This will enable the tortoises to reach the higher grass. This <span>would occur through natural selection that would favor the extreme traits (alleles of long neck) of long necks in the population.</span></span>




5 0
2 years ago
Read 2 more answers
A water molecule has to pass through various organelles of a plant cell before reaching the nucleus. List in order the path that
Salsk061 [2.6K]

Answer:

cell wall, cell membrane, cytoplasm, vacuole, ER and nucleous

Explanation:

6 0
2 years ago
Read 2 more answers
In Oxygen molecule O2, stability is gained through sharing of​
FromTheMoon [43]

Answer:

Trees and plants.

Explanation:

Trees give us oxygen and plants get rid of carbon dioxide and remake it as oxygen.

6 0
2 years ago
Read 2 more answers
Other questions:
  • What is the layer of bedrock that is near Earth's surface that forms a continuous shell around Earth called?
    8·1 answer
  • Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA.
    6·2 answers
  • A food handler has finished grilling a chicken breast for a sandwich. what should the food handler do before touching the chicke
    5·2 answers
  • How is an ecological footprint determined? a. An ecological footprint is determined by measuring the average amount of land and
    11·2 answers
  • A different form of an allele at a particular locus that can have no effect to major effects on the phenotype is a(n) select one
    7·1 answer
  • Viruses do not possess all the characteristics of life. Identify those characteristics that viruses display and those they don’t
    14·2 answers
  • In this specimen of onion root cells, what is the amount of time, in minutes, spent in interphase
    15·1 answer
  • Which label belongs in the area marked x?
    11·2 answers
  • Sonny took 16 seconds to finish a 100 m race . what was sonny 's average speed in the race ? give your answer decimal form
    10·1 answer
  • A lady beetle has black spots on its back similar to its parents. Where are the instructions stored to provide the information f
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!