A human embryo doesn't need the kind of yolk that is present in a chick embryo. Explain.

A. It doesn't need any nourishment.

B. It gets its nourishment from its mother.

C. It can synthesize its own food.

Why do scientists reject the use of evolution and genetics to support racists' ideologies?

What must happen for a solar eclipse to occur? a) The moon must pass behind Earth. b) The moon must be full. c) The moon's orbit must cross the plane of the ecliptic. d) The moon's orbit must not cross Earth's penumbra.

Which feature is not the result of a glacier carving out rock as it moves

TIME REMA 01:40 Which statement describes the Big Sandy, Clinch-Powell, and Holston watersheds? Check all that apply. They are the smallest watersheds. They are located in the same region. They all border the state of Kentucky.

Three teaspoons of medication is equal to

A hormone that increases heart rate, blood pressure, and blood sugar levels in times of emergency is

What is the meaning of the word "thermal" in this sentence? all boys coming on the school camping trip need to bring a pair of long thermal underwear because it is going to be very cold this weekend.

If an animal had 44 chromosomes in its sex cells, how many chromosomes total will they have?

Which system regulates and controls growth, development, metabolism, and reproduction? 1. endocrine system 2. lymphatic system 3. integumentary system 4. skeletal system

In photosynthesis what do the chloroplasts convert the energy of sunlight into?