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
Ghella [55]
2 years ago
7

For what percentage of time has life existed on earth (round to the nearest whole number

Biology
1 answer:
g100num [7]2 years ago
5 0
82.6 I'm sure since your rounding to the nearest whole number
You might be interested in
If you are testing traits for Mendelian inheritance, how do you calculate the EXPECTED values?
Georgia [21]

n a cross between two heterozygous individuals, the offspring would be expected to show a 3 : 1 ratio. For example, in Case 1, three-fourths of the individuals would have red (wild-type) eyes, and one-fourth would have sepia eyes.

If there are 44 offspring, how many are expected to have red eyes?

We expect three-fourths to have red eyes.
<span>34</span> of 44 = 33

If there are 44 offspring, how many are expected to have sepia eyes?
<span>14</span> of 44 = 11

Now you are ready to calculate chi-square.

8 0
3 years ago
what role do bacteria play in a food web? a) primary producers b) primary consumers c) secondary consumers d) decomposers
Andreas93 [3]
The answer would be d) decomposers
6 0
3 years ago
During childbirth, the head of the baby pushes against the mother's cervix. A nerve impulse is transmitted to the brain which ca
Bingel [31]

Answer:a positive feedback

Explanation: positive feedback is a type of feedback mechanism employed by the body,in which an output is enhanced or acclerated.

In contrast to negative feedback where the body regulates it's internal conditions by reducing the effect of a stimuli,In positive feedback ,the body enhances the effect of the stimuli.

It is not common as negative feedback in homeostasis.

An example is the increasing release of oxytocin to promote contractions during childbirth,until the child is born.

Another example is the accumulation of blood platelet , in the site of blood vessels injury to

cause blood clotting.

3 0
3 years ago
In a hypothetical situation, a certain species of flea feeds only on pronghorn antelopes. In the western United States, pronghor
zysi [14]

Answer:

<em><u>sympatric speciation and habitat isolation</u></em>

Explanation:

Hope this help

HAVE A NICE DAY!!

8 0
3 years ago
Name 5 types of relationship in ecosystems.
BigorU [14]

Answer:

competition, predation, commensalism, mutualism and parasitism.

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • This is science
    15·2 answers
  • During dry weather , the water level in a small pond drops because of runoff
    13·1 answer
  • Create a small dichotomous key that names the following creatures.
    14·1 answer
  • Identify the REACTANTS in the chemical reaction below.
    11·1 answer
  • how are radioactive isotopes used to determine the absolute age of igneous rock name to radiometric methods that are used
    12·1 answer
  • Mammalian labor and delivery involves a series of increasingly powerful contractions. Discuss the factors involved in the amplif
    10·1 answer
  • Consider a gene that exists in two allelic forms in a simple Mendelian dominant/recessive pair. In a large population of randoml
    12·1 answer
  • If pore space comprises 60% of the total volume of a soil and half of this pore space is filled with water, how much of the tota
    13·1 answer
  • A substance that can be reused is called what?
    5·1 answer
  • 1. Cooking oil has a mass of 22.75 g and a volume of 25 mL . What is its density ? Show your work .
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!