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larisa86 [58]
2 years ago
10

Help I will mark brainliest

Biology
2 answers:
Musya8 [376]2 years ago
6 0

Answer:

Explanation:

No one cares

Ahat [919]2 years ago
4 0

Answer:

A is mollusca gastropoda as it looks like a snail

b is pteridophyta as it is a vascular plant

c. is arthopoda trilobita

d is the brachiopoda as it has hard shells on upper and lower surfaces

and the other bit I just answered in another question

Explanation:

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Hffgghhhhhhhhhghhhhhhhuhhhhhyhhhhhhhhhghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
nikklg [1K]
Fjeksjwiwnsjriekdkfjd
8 0
3 years ago
Calculate the number of protons and neutrons in each isotope listed . Uranium-235_______ protons,________neutrons
77julia77 [94]

Number of protons in Uranium-235 is 92

Number of neutrons in Uranium- 235 is 143

Explanation:

Isotopes are the two or more elements having the same number of protons and electrons but different number of neutrons. They differ in their atomic masses.

5 0
3 years ago
The body monitors the levels of oxygen in the blood to regulate breathing. Isabel is running in a marathon and is near the finis
Nataliya [291]

The chronological order of the response brought about by the nervous system is as follows.


1. Sensory receptors in the arteries detect low oxygen levels.

2. Sensory neurons generate an impulse.

3. The central nervous system relays an impulse to certain brain regions.

4. The brain sends signals through motor neurons.

5. Isabel's breathing rate increases.


The response to a stimulus is called a reflex action and the pathway traveled by the reflex action is called the reflex arch. A reflex action is an automatic involuntary response to a stimulus which minimizes any damage to the body. During conditions of low levels of oxygen in the body, the receptors detect the stimulus of low oxygen levels which could pose a threat to the individual and sensory neurons generate an impulse. It reaches the central nervous system and then the brain. In turn, brain sends signals through the motor neurons that carry a message and help in increasing the breathing rate of Isabel.

6 0
3 years ago
The table shows the total number of posts made by the average registered user of a new social media app in the first week
nasty-shy [4]

Linear equations are used to represent relations that have constant rates

The linear regression equation that models the data in this table is \^y = 2.40476x + 0.33333

<h3>Regression equation using a graphing calculator</h3>

To calculate the regression equation, we make use of a graphing calculator.

Using the graphing calculator, we have the following data:

  • Sum of X = 28
  • Sum of Y = 70
  • Mean X = 3.5
  • Mean Y = 8.75
  • Sum of squares (SSX) = 42
  • Sum of products (SP) = 101
<h3 /><h3>Formulating the regression equation</h3>

The regression equation is represented as:

\^y = b\^x + a

Where:

b = \frac{SP}{SSX} and a = MY - bMX

So, we have:

b = \frac{101}{42}

b = 2.40476

Also, we have:

a = MY - bMX

a= 8.75 - 2.4\times 3.5

a= 0.33333

Hence, the linear regression equation is:

\^y = 2.40476x + 0.33333

Read more about regression equations at:

brainly.com/question/25987747

3 0
2 years ago
to maintain a line of pure-breeding peas , selective breeders would use a technique called __________.
Basile [38]
To maintain a line of pure-breeding peas, selective breeders would use a technique called artificial cross-pollination. This is a technique were breeders transfer pollen from the anthers of one pea plant (male parent) to a stigma of a flower (female parent).

This technique was developed by Gregor Mendel, the founder of the science of genetics. He was a monk who dedicated his time in research about how genes of plants are carried over through specific species. In his controlled experiment he used the pea plant because they are cheap and readily available from merchants who sold them in different classifications. He also used pea plants because they have the capacity to self-pollinate or cross-pollinate.
5 0
3 years ago
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