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
Pepsi [2]
4 years ago
13

During which period did the first fish evolve?

Biology
1 answer:
AveGali [126]4 years ago
7 0
They evolved during the Cambrian explosion.

You might be interested in
In pan mixia, in the absence of migration, mutation, and selection the frequencies are A) Constant in genotype and phenotype B)
muminat

Answer: option A - Constant in genotype and phenotype

Explanation:

Pan mixia is a situation in which an individual is just as likely to mate with another randomly chosen individual as any other in the population

In a situation as described in the question, sexual reproduction is limited to organisms of the same habitat, thus the genetic variation is reduced to the BAREST MINIMUM.

This results in Constancy in genotype and phenotype

6 0
4 years ago
Two objects of the same mass are on two different planets. Planet A has a force of gravity that is weaker than that of planet B.
galina1969 [7]

The answer would be B, The weight of the object on planet A will be greater than the weight of the object on planet B.

This is correct because the force of gravity on planet A pushes down on the mass to make it greater

This is also correct because I got it right on my test, hope this helps.

3 1
3 years ago
Read 2 more answers
Identify the indentation that is inferiorolateral to the auricular surface. Identify the indentation that is inferiorolateral to
gizmo_the_mogwai [7]

Answer:

The correct answer is - Greater sciatic notch

Explanation:

The greater sciatic notch is a notch in one of the pelvic bones n the human called the ilium. It is located between the posterior inferior iliac spine, and the auricular surface or ischial spine. It is the passageway through the pelvis into the thigh and posterior side.

3 0
3 years ago
Which of the following best describes the ploidy level of a fertilized embryo sac? A) All cells are diploid. B) All cells are tr
AveGali [126]

e. There are haploid, diploid, and triploid cells.

3 0
3 years ago
What are the five main phases of the cell cycle? What are the main events in each?
saveliy_v [14]

Answer:

In the adult organism, mitosis plays a role in cell replacement, wound healing and tumour formation. Mitosis, although a continuous process, is conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase and telophase.

Cell cycle has different stages called G1, S, G2, and M. G1 is the stage where the cell is preparing to divide. To do this, it then moves into the S phase where the cell copies all the DNA.

Explanation:

good luck

please mark me as a brainliest

3 0
3 years ago
Other questions:
  • In the human eye, where is the actual image formed before being transmitted to the brain?
    12·1 answer
  • Juan eats a meal full of sugar and starches. in response, his pancreas releases insulin into the bloodstream which stimulates hi
    8·1 answer
  • A female is born with attached earlobes, which is a recessive phenotype. Which of the following statements about her parents mus
    14·1 answer
  • Which organisms would share the most characteristics?
    6·1 answer
  • Which of the following energy forms is not involved in hitting a tennis ball?
    12·1 answer
  • When making bread, yeast, flour, sugar, and water are mixed together and set in a warm area to rise. A student cut the rising do
    6·1 answer
  • What type of cell does this occur in?
    8·1 answer
  • What are the four major blood groups?
    8·1 answer
  • EXPERT HELP: EXPLAIN THE ANSWER
    6·1 answer
  • How do false killer whales help mankind and nature!!!!!???????
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!