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
DanielleElmas [232]
3 years ago
11

Which of the following explains why it took so long for the public to accept the negative health effects of smoking?

Biology
1 answer:
Bogdan [553]3 years ago
8 0

Answer:

I believe the answer is B  

Explanation:

I hope this helps

You might be interested in
Compare different scientist's point of view for the theory of evolution (Lamark and Darwin)
OverLord2011 [107]
<span>Lamarck believed that organisms could acquire characteristics during their lifetime, that they could pass down to their offspring, but Darwin did not believe these traits could be passed down. Darwin proved that the species adapted to their environment through natural selection. Meaning only the one that could adapt to the changes would survive. </span>
7 0
3 years ago
You have learned that the fusion of egg and sperm produces a zygote. But how does the sperm reach the egg, and how does the zygo
FrozenT [24]

Answer:

Pollen grain lands on stigma

Explanation:

A) Pollen grain lands on stigma

  • pollen tube grows down the style
  • generative cell divides, forming two sperm
  • two sperm are discharged to them female gametophyte
  • sperm fuse with the egg and two polar nuclei
  • zygote forms and divides into a terminal cell and a basal cell
  • cells of embryo differentiate into three tissue types---- seed dries out and becomes dormant.

B)

  1. During pollination, a pollen grain is transferred from an anther to a stigma. Once the pollen grain lands on a suitable stigma, it germinates and forms a pollen tube, a structure that grows down through the style to the ovary.
  2. Once in the pollen tube, the generative cell from the pollen grain divides by mitosis, forming two sperm. The sperm travel down the pollen tube and are discharged into the female gametophyte. In a process called double fertilization, one sperm fertilizes the egg, forming the zygote; the other sperm fuses with two polar nuclei in the female gametophyte, forming a triploid (3n) nucleus. The zygote develops into the plant embryo, and the triploid nucleus divides and gives rise to the endosperm. Double fertilization prevents the waste of the plant's resources by ensuring that the nutrient-rich endosperm only develops if the egg is fertilized.
  3. After double fertilization, the ovule starts to develop into a seed containing the plant embryo. As the embryo develops, the three tissue systems are established, and the cotyledons (seed leaves) form. The seeds of many species dry out as they mature. These dry seeds lie dormant until suitable germination conditions occur.

3 0
3 years ago
While walking down the street, a cat jumps out of an alley into the pathway of an adult. They note that the man's heart is "raci
Sedaia [141]

Answer: The palpating heart race response is due to the sympathetic nervous system controlling the body's fight-or-flight reactions. 

Explanation:

The sympathetic nervous system is in charged of controlling the body's fight-or-flight reactions. When facing a threat, these responses defaultly prepare our body to flee from danger or face the threat head-on.

Many of the physiological responses you experience during times of emotional streaming, such as sweaty palms or a racing heartbeat, are regulated by the sympathetic nervous system, a branching of the autonomic nervous system.

5 0
3 years ago
Why must an experiment or a survey be controlled? What is the difference between the control group and the experimental group in
notka56 [123]
An experiment or survey must be controlled in order to receive accurate results.

In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
5 0
3 years ago
Read 2 more answers
Tamra is the goalie for her soccer team. The goalie blocks the ball from going into the net. She uses her brain, eyes, nerves, a
hammer [34]

Answer:

Her eyes send signals to the brain. Her brain gets the signal and sends another one through her nerves to her muscles. Her muscles then move her arm or leg toward the ball to try and block it.

Explanation:

Simple science. If I could help you, you are welcome. if I couldn't I'm sorry.

6 0
2 years ago
Other questions:
  • _______________ is the process of the cell implementing the instructions of a gene and making a protein.
    8·2 answers
  • Hffgghhhhhhhhhghhhhhhhuhhhhhyhhhhhhhhhghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
    7·1 answer
  • How does artificial selection differ from natural selection?
    6·1 answer
  • Imagine a new type of cell was discovered on Mars in an organism growing in benzene, a nonpolar liquid. The cell had a lipid bil
    15·1 answer
  • The Atomic Theory states that protons and neutrons are packed closely together in a small nucleus and electrons are found surrou
    8·2 answers
  • Which of the following would best represent the electrical plug for the coffee maker model?
    9·2 answers
  • What happens when gneiss is melted?
    5·2 answers
  • All plants and animals in a food chain use energy. Where does this energy start from?
    11·2 answers
  • Why is it beneficial to have genotypic and phenotypic variation within a species
    13·1 answer
  • What type of learning shapes innate behaviors?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!