The ecological problem that resulted from Ddt Use is called

What do you think will be the biggest space mission of the twenty-first century? What challenges do you anticipate that the huma

tester [92]

I believe the biggest space mission of the twenty-first century will be a manned mission to Mars, and the colonization that follows. This is the stated goal of several nations, companies, and individuals, all with considerably deep pockets. This mission will not only be a huge leap forward in space exploration, it will usher in a new era in human history in which the human race is an interplanetary civilization, a natural milestone as humanity continues to progress and advance.

Significant challenges are many and overwhelming. In terms of getting to mars, we need efficient, powerful propulsion systems and a spaceship that can not only accommodate a full crew for a mission that would likely last years, but withstand the various hazards that a long trip through space and entrance into the Martian atmosphere will entail. In terms of colonization, significant challenges will include establishing efficient and frequent travel/transport between the planets, and in the longer term, the necessity to terraform the planet (make it more like Earth) so that humans can more easily live there.

4 0

3 years ago

In summer squash, white fruit (H) is dominant over yellow (h), and the flattened disc-shaped fruit (D) is dominant over the sphe

Alekssandra [29.7K]

Answer:

a. It is a dihybrid cross

b. 0%

c. 0%

d. 0%

e. 100%

f. 0%

g. 0%

Note: Answers are given assuming that hhRD = hhDD

Explanation:

a. The cross, HHdd x hhDD is a dihybrid cross involving two traits: fruit colour and fruit shape

2. Gametes produced in the cross are given below:

for HHdd= Hd and Hd

For hhDD = hD and hD

Offspring produced in the cross:

All HhDd, which represents white and the flattened disc-shaped fruit white since They are both dominant characters.

b. Percentage of the offspring from this cross expected to have the HHDD genotype = 0%

c. Percentage of the offspring from this cros expected to have the hhDD genotype = 0%

d. Percentage of the offspring from this cross expected to have the HhDd genotype = 0%

e. Percentage of the offspring from this cross are expected to produce white and disc-shaped fruits (HHDD or HhDD or HhDd) = 100%

f. Percentage of the offspring from this cross expected to produce white and spherical fruits (HHdd or Hhdd) = 0%

g. Percentage of the offspring from this cross expected to produce yellow and disc-shape (hhDD or hhDd) = 0%

8 0

3 years ago

Climate and weather (see image)

NikAS [45]

Answer:Latitude and ocean currents

4 0

2 years ago

Read 2 more answers

Bone resorption inhibitors treat rheumatoid arthritis. decrease inflammation of bones. strengthen bone affected by osteoporosis.

Anton [14]

Bone resorption inhibitors prevent the breakdown of bone tissues and are therefore used to strengthen bone affected by osteoporosis.

<h3>What is osteoporosis? </h3>

It is a condition in which the bones have become weak and turned brittle. The term osteoporosis means 'porous bones. Osteoporosis weakens the bones and thus increases the risk of bone fractures which are sudden and unexpected.

This disease causes a decrease in bone density. It usually starts without any symptoms and doesn't cause any pain and is only diagnosed when a fracture has been caused in a weak bone.

Bone resorption is a natural process of breakdown of bone tissue to supply calcium to the body and this process is usually carried out with bone formation.

During osteoporosis, medications suppressing bone resorption are prescribed to inhibit or slow down the process of breakdown of bones